Return all characters which had been previously cut from the game, like Roy, Dr. Mario, etc.
#1 Louie (Pikmin 2)
Idea #1: He would pretty much be a 'clone' of Olimar, with a few tweaks to damage that can be dealt, maybe he could be a little lighter, and have a new final smash similar to Kirby's cooking one, or maybe something involving the Titan Dweevil. Alternatively, they change Olimar's ship in his Final Smash to the S.S Dolphin so Louie can have the same Final Smash but with the Hocotate Ship.
Idea #2: Maybe, Louie could have a unique ability to turn any weapon on the battlefield (Ray Gun, Unira, Bob-Omb, etc) into a food item, since