VideoGamesDaily posted a pretty nice interview with Marvel vs Capcom 3's producer, Ryota Niitsuma. It goes into the game's combo systems, character questions, some info about how the game has changed since E3, and more. Check it out. In the sample quoted below, Ryota shoots down the possibility of Demitri from Darkstalkers appearing in the game:
...could you possibly satisfy our curiosity with regard to Marvel gender-reassignment? We have yet to see Darkstalkers’ Demitri appear in TVC or MVC3. Is his infamous Midnight Bliss EX move (where he turns unsuspecting male characters into female versions of themselves before sucking away their souls) something that Marvel would tolerate with their cast?
One, Demitri would probably annoy Marvel for doing that, and the other thing is that we’d have to make a female model for every single character in the game which probably isn’t time well spent. If we did put Demitri in it and he didn’t have Midnight Bliss, fans are going to say ‘that’s not really Demitri – Capcom failed.’ Darkstalkers characters are all complete memory hunger-mad characters because they constantly transform into things. They can’t just walk – they have to change into something when they move and it just uses a lot of data. Even just having these two (Morrigan and Felicia) is a big deal. To put Demitri in we’d have to have time to make a whole other game.