The Marvel Cinematic Universe is the most popular movie franchise in the world in 2015. With eleven movies having been released in the franchise so far, the Marvel Studios project has grossed almost $8 billion in total at the worldwide box office.
Movie franchises don't pull in that kind of money if they're not entertaining, and there have been some stand-out, memorable scenes in those eleven movies. But sometimes, viewers were left feeling that even these extraordinary movies were still lacking something important by the time the credits were rolling.
The inclusion of certain notably missing scenes in past Marvel Cinematic Universe movies would have gone a long way towards making them even better, and filling in some of the gaps that left questions and concerns amongst fans. Some of these scenes have been partly depicted or explained in their Marvel comic book counterparts, but unfortunately only the more die-hard fans follow the original comic book stories.
These are ten scenes that past Marvel Cinematic Universe movies really should have included. Not that this article contains spoilers from Marvel Cinematic Universe movies, but stops short at anything to do with Avengers: Age of Ultron.
10 Peter Quill's Abduction (Guardians Of The Galaxy)
Granted, the circumstances in which Peter Quill was taken from Earth and the moment in which he was actually beamed up on to the Ravagers' spaceship were actually shown on screen at the beginning of 2104's Guardians of the Galaxy, but then it suddenly fast forwarded twenty-six years with Quill parading around the distant planet of Morag like he owned the place, as a cocky intergalactic outlaw.
It would have been cool to have at least seen some of the time he spent as a child growing up with the Ravagers as his guardians - and to have seen how he was moulded from a bereaved child into the man who would go on to lead the Guardians of the Galaxy against the universal threat of Ronan.
This is something that may be shown in future movies, although most agree that does seem unlikely, as it's probably going to focus more on Quill's relationship with his father going forward.
9 What Happened On Morag? (Guardians Of The Galaxy)
The scene on Earth when Peter Quill was taken by the Ravagers is immediately followed by the scene on the planet Morag, with Quill dancing around (as Star-Lord) to the tune of Redbone's Come and Get Your Love.
The planet is completely derelict and Quill uses a device to show how it was once a thriving civilisation before he heads into a large building to acquire the Infinity Stone known as the Orb.
This raises the question; what was an Infinity Stone doing unattended on a derelict planet? It would, therefore, have been a good idea to include a scene - or even just a few lines of dialogue - to explain how the planet got into its derelict state, why the Infinity Stone was there in the first place, and how exactly it came to be there unattended for what can only be assumed to be quite a long period of time.
8 The Fate Of The Red Skull (Captain America: The First Avenger)
At the end of 2011's Captain America: The First Avenger, the Red Skull was defeated when he foolishly tried to hold the Tesseract with his mortal hands. He was immediately banished with a flash of energy and a lot of people assumed he was killed. But was that actually the case?
The Tesseract is the Marvel Cinematic Universe version of the Space Gem and, as such, it is theorised that he may actually have simply been sent to a distant part of the universe via its power.
With that in mind, some clarification would have been welcome - particularly if the latter theory was true, which would mean he was still alive, was indeed the case.
As things stand, it's unknown whether or not the character could realistically return and, as an extremely important character in Marvel comic books and the Captain America mythos, it would be good to know if that was the case or not.
7 Loki Meeting Thanos (The Avengers)
Throughout the first Avengers movie in 2013, it was hinted at that Loki was operating under the ruthless guidance of someone infinitely more powerful than him (take, for example, the scene in which The Other told him that he would wish for something as sweet as pain should he fail in his attempts to conquer Earth) and, in the mid-credits scene of the movie, that someone was revealed to be the Mad Titan Thanos.
Prior to the Avengers movie, Loki had drifted off into space at the end of Thor and, somewhere in between those two events, he had obviously met up with Thanos and been given the powerful staff and the Chitauri as his army in order to attack Earth.
It would have been interesting to at least have seen how that meeting occurred - although, in this case, it is understandable that it wasn't shown, as the big reveal of Thanos at the end of the movie would have been spoiled. That being said, Thanos could easily have been off screen in the scene.
6 Black Widow's Origins
Countless number of Marvel Cinematic Universe fans have been craving a Black Widow movie since the character made her movie debut in 2010's Iron Man 2. Scarlett Johansson has portrayed the former Russian assassin brilliantly and she comes across as enigmatic and interesting.
The recent Avengers: Age of Ultron gave something of an insight into her past (thanks to Scarlet Witch's power to make people see visions), but it would have been great to have seen it delved into more. A solo movie for the character or more detailed flashback scenes showing her origins would have been great - and given that she's now appeared in four movies in total, there has been ample opportunity for that.
The same, to a lesser extent, can be said about Hawkeye - although his backstory is generally a lot less interesting.
5 Bucky Being Found (Captain America: The Winter Soldier)
In 2011's Captain America: The First Avenger, the titular hero's best friend and fellow soldier - Bucky Barnes - appeared to fall to his death during an assault on a train carrying Hydra agents. However, in Captain America: The Winter Soldier, it was revealed that Hydra had found him, saved his life and brainwashed him to turn him into the titular villain.
In spite of the fact that this all took place in a comic book movie universe and that Hydra possessed advanced technology, it's still difficult to understand exactly how he could possibly have lived after his fall from the train.
It would have been good for the moment in which Hydra discovered him to have been depicted on screen, so that audiences could fathom exactly how they managed to bring him back to life.
4 Abomination Being Incarcerated (The Incredible Hulk)
At the end of the 2008 film The Incredible Hulk, the titular green hero defeated the evil Abomination - after a brutal fight that "broke Harlem" - by choking him out with a big, thick chain.
It was later revealed that the Abomination AKA Emil Blonsky had been taken into custody by S.H.I.E.L.D. - under the watch of General Ross - and was in a cryocell in Barrow, Alaska.
Further information about his incarceration was revealed in some of the tie-in comics, but since they are barely read by the average movie-goer, it would have been useful to see exactly how they managed to get him there without the assistance of the Hulk - because it seems he could have easily escaped from the likes of a group of ordinary soldiers or S.H.I.E.L.D. agents if he had wanted to, given his immense power.
3 Tony Stark's Emotional Collapse (Iron Man 3)
Following the events of the Avengers movie, in which Tony Stark saved the world from aliens by diverting a nuclear missile through a portal and into their mothership, it was revealed in 2013's Iron Man 3 that he had been emotionally devastated by the event and was suffering from post-traumatic stress disorder, resulting in flashbacks and a lack of sleep (amongst other things).
However, at the end of the Avengers movie itself, he appeared to be the same old Tony Stark - making humorous quips and showing no signs of being affected by his experience.
So how exactly did he go from being good old Tony Stark to a quivering mess? It was definitely an oversight on Marvel Studios' part not to depict that decline in his emotional well-being on screen.
2 What Suddenly Made The Arc Reactor Removable? (Iron Man 3)
For three previous movies (Iron Man, Iron Man 2 and The Avengers) Tony Stark had an arc reactor in his chest and it was explicitly stated that it couldn't be removed or he would die.
Then, in 2013's Iron Man 3 when Stark decided to retire (albeit temporarily, as it turns out) from superhero duties, he had it removed quite nonchalantly thanks to what seemed like a spur of the moment decision.
Due to the fact that a big deal was previously made of the fact that it couldn't actually be removed, it would have been a good idea to include a scene explaining how a stage was reached whereby it could be taken out so easily.
A simple scene explaining how it was possible (did he use Extremis to survive the procedure? Was it simply a case of medical advances in the Marvel Cinematic Universe making it possible?) would have meant that the removal of the arc reactor would make a lot more sense.
1 How Loki Usurped Odin (Thor: The Dark World)
2013's Thor: The Dark World ended with Loki revealing himself to be sat in Odin's place on the Asgardian throne. He had used his powers of illusion to make Thor and the people of Asgard believe that he actually was Odin, having previously appeared to have died fighting alongside Thor against Malekith, Kurse and the Dark Elves.
Given that Odin is the most powerful man in Asgard - powerful enough to grant and deny Thor his power with a mere whisper - it is difficult to see how Loki could possibly have taken his place on the throne.
Did he have help? Did he manage it alone? And what is Odin's current predicament? Is he imprisoned? Is he even still alive? It would have been nice to have been shown exactly what happened to lead to Loki ruling Asgard.
Which other scenes do you think should have been shown on screen? Let us know your thoughts in the comments section below.