I am thinking if the MCU was cancelled and Disney announced they were rebooting the Marvel Universe on film in the same vein as James Gunn's new DCU.
In my 'Phase 1' (which will be 'Chapter 1') the movies will consist of adaptations of Stan Lee's original works from the 60s; Fantastic Four, Hulk, Spider-Man, Iron Man, Ant-Man, Thor, Doctor Strange, Captain America, X-Men, the Avengers & Daredevil.
Whilst other character would obviously be featured in the movies, I have only selected to cast the most significant major heroes and villains.