In what may or may not be a coincidence, this is pretty much what Lupinko said. Overall, if true, I am content for the most part, but I do wish Shuma and Frank were on the disc. As for Mega Man, Arthur is Mega Man on steroids. I do love Mega Man, but I also love Ghouls n Ghosts, so it's not too bad. Now maybe the Hand's stage is for Taskmaster and Akuma?
Hopefully if there are more DLC characters, they are the ones that were dropped from development late, like Ghost Rider or Emma Frost.
As for characters, I will need more time to do some theory fighter, but the first characters I really want to play are M.O.D.O.K., Lei-Lei, and Sent.