I'm a tad bit underwhelmed...
1.) why Mega Man X? We already had X and Legends represented in MvC3 with Zero and Tron Bonne and shoulda had classic in 3 with him being hinted at in the days of futures past level that recreated the iconic deceased/apprehended cover.
2.) Capcom used their flagship characters in the trailer and Marvel used their flagship...movie heroes in the trailer. Captain Marvel has been pushed heavy these past few years because of her upcoming film debut. Iron man is the face of the MCU right now. If those 2 were in the trailer and neither one of them are "OG" Xmen vs Street Fighter characters (Iron Man's first appearance was in Marvel super heroes vs. Street Fighter) than that whole no Xmen rumor and focus on MCU character may be true
3.) the trailer as well as the game title allude to the infinity gems being a factor within the game title. Because balancing wasn't an issue before, now you it seems you're going to get access to different gems in battle with different effects? They'll be a gen better than others. Does Thanos get to make a comeback in all his MvC2 glory if EVERYBODY can use infinity gems now?
4.) The title of the game isn't MvC4, it's MvC infinite. That's all the info you need to know that this game is trying to separate itself from its predecessors
Still need to see in game footage and it seems like Valve is doing the game engine through Steam so that a plus.....but it doesn't feel right
man...
Bonus.) 2v2?? We left that in '98
...but UMvC3 got a port to PS4