This is one of my most played games. Yet no one is ever online. I did play 7 when people started playing it a lot after the sale, but now I can't find and. Sad, because it's an amazing game.
I think what I'm disappointed in is how the camera is positioned. I really enjoyed the camera following behind you in mario 64 or galaxy. I also feel like the background looks more like a toypen, rather than an immersive environment. Although I do think that the camera positioning would be great for co-op. Maybe I just think it looks too much like a side scroller, new super mario bros rather than a real 3d mario game.