hey i was just teasing a bit!
I had a theory Thanos' snap could be reverted by bringing to life the half of the population that he culled at random and then spreading his ridiculous amount of power among some of that population by integrating that power into human DNA, thereby giving birth to.. mutants. It makes sense because, until now, Marvel's superheroes have been soldiers who save the day and they're well received by mankind. But having people with strange abilities appearing all over the world would cause a lot of fear and confusion and would make people hate them because they are dangerous, unregistered, untrained and "mutants", just like the X-Men are in the comics.
So I like something like what Psylockolossus said, X-Men Begin because you have to somehow introduce an entire population of superpowered beings into the MCU. However, for the sequel they'd need a plot to work with like X-Men Apocalypse, Days of Future Past, Messiah complex, etc. I like when they base their titles on a comic book story although of course I have no idea what stories they're planning to work with. They gave us Vulture for their first Spiderman film and that's a villain we'd never seen ont he big screen.