I have no doubts that the single player will be top notch. Pikmin 2 was a great game, and I'm sure Pikmin 3 will improve on the single player.
However, I expect, and hope, that the biggest improvement in Pikmin 3 will be the multiplayer. The vs multiplayer was great fun, but it was not up to the level where you could actually get competitive in it, as in brawl/kart.
Co-op multiplayer will be done much better too. I expect that co-op will be done similarly to NSMB:Wii - it's not required for anything, but is permitted for the entire game. The challenges will probably still exist, but this will not be the main form of co-op.







