Another question, did you get an idea as to how big the roster will be? And while the quote of what Marvel characters can be used does aspire some hope, why wasn't Marvel straight-up when asked a similar question by Game Informer?
Also, the game being "super-early" kinda conflicts with the 2017 release, even if it's Late 2017.
I think they meant "super early" from a journalistic standpoint. They're used to being able to play games after they're newly announced, but they couldn't play Marvel at all. That prompted them to ask why they can't play and I think that's when they got the "it's early" response.
If I'm looking at it from a dev perspective... at least four characters are pretty close to being done (it seems). The combat system is tied down pretty well in terms of Infinity Stones, 2v2, how combos flow, etc. Graphics may get adjusted, but the core is there and looking pretty sound.
It'll probably be playable at E3 if not some fighting game event before that. We know pretty much for sure it'll be playable at Evo. I don't think there's too much to worry about in regards to a late 2017 release, but I do think what was shown today is early enough that people shouldn't be worried about how it "looks".
Hopefully I'll have a chance to ask questions directly before E3, but we'll see. No guarantees there unless Capcom has an event.
So you're telling me there's a chance?
I'd say so, but nothing confirmed. We could easily see all X-Men characters in story mode but not playable. At the very least I don't think X-Men characters are 100% off the table, but again, all second hand info.