I think they should make animated movies for TV and animated TV shows about the lesser knowns. I would like to see that. maybe have a series or TV movie, animated, about some obscure Marvel character like Herculese or Doc Samson, or Darkhawk, the Exiles. (not that these guys are real obscure, just that I don't see big screen movies for them in the future) Or perhaps a better known comic like Nick Fury of SHEILD or the Inhumans.
What I would LOVE to see is a big budget animated movie, of theaters, instead of a live action movie. All done in the hand drawn animation style like Disney films, and flowing animation. Maybe for something like the Avengers or Secret War.
big budget
I think the Animation world is a market Marvel could really use for their characters, they could put a number of them out there.