We know that the next Mario Galaxy will basically be SMG, but with more levels, new crazy power-ups that they couldnt fit into the first game (Miyamoto said so himself) and I hope there'll be an extension of the red star to use in levels.
I also would LOVE a new 2D mario, either Wiiware or DS release (or DS2 launch title), which is built entirely around the 2D sections from Galaxy. Like, Super Mario Solar System, but with a much better name. It could even feature Luigi instead, ie, Luigi Galaxy.







