Saw a (near) full playthrough on youtube, gameplay and visuals looked very neat, story is not my thing.
I think i'll pass though, i tried to replay SMB recently (i finished most levels, light and dark side, in 2010) and just don't have the patience for these kind of games anymore.
Some of the final levels especially looked like they'd get really frustrating.
EDIT: I know there's like a ninja dog mode or whatever, but then why play it?