Mimiga Village looks so much better than it did in the original version. It actually looks like a village now.
OT: I'll definitely be getting this game, but I do agree that the level redesigns are hit and miss. I love the new Egg Corridor, but Grasstown looks a bit iffy.
I also might end up buying the DSiWare version... just so that I have both the 2D and 3D versions on the go.