I would love to see an almost chronological printing of the entire Marvel universe in the MMW format.  I bought every one of the Marvel Premiere Classic HCs (in the variant cover format) because I figured they were as close as we were going to get to Masterwork editions of some of the 80s mini-series.  But for a book that lasted 10-20 issues or so, I want my Masterworks.  I would not be too surprised to see a Guardians of the Galaxy volume available about the time the movie comes out.  I also expect they will try to release a Luke Cage volume when the Netflix show drops.  By the same token, I wouldn't be surprised to see Ant-Man Vol. 3 in time for that film in 2015.

Personally I would love to see Ghost Rider and Werewolf By Night, but I'm not holding my breath.  I'd also go giddy for Not Brand Ecch.  I really wish they would go back to more than 12 MMW a year.  Give us a Marvel Age title per month in addition to a Golden Age volume 2 to 4 times a year, an Atlas Age volume 2 to 4 times a year, and a genre title or a one and done volume 2 to 4 times a year. 

And while I have been picking up the Epic line as well, I'm really not a huge fan of paperback collections.  Give me something more permanent.  I ordered the Falcon trade paperback but that was only because it was one of the mini-series that Premiere Classics didn't reprint before that line folded.