The Marvel Cinematic Universe is easily the most complex and expansive universe in cinema history. Spanning 27 movies, 18 television shows, and still counting with more to come in the years following. For many of the MCU fans, it isn't very difficult to follow along with the canon as either they grew up with the MCU starting with Iron Man in 2008 or have been able to catch up to where it is at now.
But now with multiverses at play, former non-MCU Marvel films are now being reintroduced and put into the canon and even rumored to get sequels of their own, with Tobey Maguire and Andrew Garfield rumored to be linked to more Spider-Man appearances, what was already large could soon be massive.
Related: 10 Highest-Grossing MCU Movies At The Box Office
This could take something that is already pretty complex and make it almost impossible for new fans to join in,especially with new movies and shows coming out on a regular basis. There could become a problem of continuity way too large for audiences to follow and not know where to jump in, or not feeling comfortable jumping in at a later point. Most audiences don't want to have to do homework just so they can fully enjoy a movie, they want to enjoy it as it is at that moment.
This same problem has occurred in comic books for both Marvel and DC, with both having decades worth of lore and continuity that fans would have to follow to understand the full story of what is happening. Now both Marvel and DC in their comic books have had different ways of dealing with that with DC changing and rebooting timelines like in Crisis on Infinite Earths and Marvel just creating new universes like their Ultimate universe. They both saw a problem for new fans and «fixed it»-although Marvel mostly
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