The Marvel Cinematic Universe has been doing an awesome job so far. But unlike the comics, they can't go on indefinitely. Eventually, actors will age out of roles and changes will need to be made in order to keep these franchises fresh.
Following the Secret Wars crossover event in the comics, Marvel made some changes to their funny-book universe. New characters were brought in, some characters changed identities, and concepts got fresh spins placed on them.
Sure, there have been some duds in the All-New All-Different Marvel, but it's been a pretty entertaining run overall. And some of the ideas that have come into the comics could be used to help keep the MCU fresh and surprising.
Of course, not everything from ANAD Marvel will apply to the MCU. As an example, you can't really have the teenage Peter Parker (played by Tom Holland) running a multinational corporation, nor can you use any of the mutant/Inhuman conflict stuff that's currently dominating the X-Men comics.
But that doesn't mean there aren't plenty of ideas that could easily fit into the MCU. Here are ten that would be great fun.