Looks really cool. I don't like that Nintendo seems to have a Mario engine they can just puke games out fast on, but I do like that they tweaked the concept of the levels -- the 100 seconds time in particular makes me think it will feel more like WarioWare in terms of quick thinking instead of Mario's OCD-esque find-the-big-coins and all-the-pipes-you-can-go-down feel.

The level design towards the end of the video sure is beautiful, though, imo.

I feel like it could almost just be DLC for New Super Mario Bros. U. Maybe it is. I would support that.