As for Bowser costumes there are a lot to chose from and I would like to see him get some more love distinctive in game appearances wise. I mean hell Samus got mad love in that department. So idk does he have room for only 3 more?
Current Bowser Project M Costumes
..........1........................2........................3.........................4...........................5.....................6.........................7......
Bowser Alternative Appearances/Forms Most Wanted to least Wanted
Melee Bowser
SMB1 Nintendo Advertisements Appearance
The SMB Super Show
SMB1 Manual Art
In place of the 4th skin/Blue Team Since that current costume seems like it is suppose to poorly represent it.
Meowser
Maybe replace the 3rd Skin/Red Team to enable a larger diversity of Bowser Costumes?
Rookie Bowser
Maybe Make Taunt Accessible to reserve costume slots?
Mario Strikers Bowser
Maybe Make Taunt Accessible to reserve costume slots?
Wedding Bowser
Make possibly taunt accessible too to save costume slots?
Non-Bowser/Bowser Look a likes Most wanted to least wanted.
Dark Bowser
Bowletta