Well, X and Captain Marvel makes me extremely excited and the graphics are pretty good despite some people griping that it doesn't look like SFV graphics. I have heard that characters from the X-Men and Fantastic Four series will not appear due to licensing issues and (most likely) Marvel wanting the game to focus on their cinematic universe rather than the comic book universe. This is most apparent with Cap's recent design being more akin to his Cap Am:Civil War look. Also I have a new game to keep track of after Sun and Moon was released.
I do hope we get some characters new to the MvC brand such as Daredevil, Luke Cage, Winter-Soldier, Misty Knight, (technically) Ant-Man, Starlord, Ultron, Loki, the Punisher, Vision, Falcon, Black Widow, and all those cinematic/Netflix universe characters. And it would be great to get a few more non-cinematic ones such as Namor, Squirrelgirl, Spider-gwen, Green Goblin, Agent Venom, Moon Knight, Kang, Sauron, and more. Capcom is a much smaller library to draw from but Necali or Laura would be greatly appreciated. As well as characters from Monster Hunter, Red Earth, Dragon's Dogma, Dino Crisis, and Asura's Wrath.