I don't mind the "not really but kind of" 2.5 D. Yes it looks like Mighty Number 9, but of all the problems with that game, the visuals weren't one of them.
In a Mega Man game, it's the gameplay that trumps all - see the PSP remake Mega Man Powered Up (where the developers basically enabled Big Head cheat for the whole game). Looked "meh" played amazing. As long as 11 plays like a solid MM game, I will be thrilled.
We survived the voice acting of Mega Man 8. We can survive anything!