If we were to have ever gotten new costumes, here is a list of some I would want. I know they’re discontinued but IF, this is a list of ones I would make.
Hiro Hamada - New Suit from end of film Big Hero 6
Mr Incredible and Elastigirl in Glory Days
Buzz Lightyear (Human) - Just make his wings that grey and yellow color, but keep his purple cap. Blonde Buzz is disturbing XD.
Carl Fredericksen WITHOUT the black overtop. Just his white button up and bow tie.