I got to play this at Evo. The only characters I messed with were Ghost Rider and Strider, and I had some fun with them both. Especially Strider. Even though he has low health, he was incredibly mixup heavy and I can see him being a huge problem to deal with when compared with a lockdown assist.
I was never great at MvC3 just because my primary means of playing is online play and the game's net code isn't the best, simply because the game is so fast. Hopefully Capcom follows through with what they said and the net code will be great. Also, I'm totally going to use each new character extensively. I really need a character to compliment Felicia and Doctor Doom. Speaking of which...Felicia can delta kick in the air now, which I am incredibly hyped for. Unfortunately my bread and butter combo didn't function the same way...when I SJC'd Rolling Crystal Flash off of Toy Touch, apparently too much hit stun decay occurred and they recovered out of it. I guess I'll have to learn a new BnB.
Doctor Doom seemed way faster like all the reports said. I swear, everyone is probably going to use Doom in UMvC3. He seemed damn good.