This thread is so (soap bar in my mouth). OP is like "Why can't I change my costumes on the fly?" Everybody else is like "It's no problem you have to go back 3 menus, then change it, then you have it in ranked", which is exactly what OP is complaining about.
Seriously do you guys have a reading comprehension disability?
To add to that: Why can't you just pick one of the 4-5 costumes everyone has, then pick a color like they did in so many fighting games since 1995.
It's NOT 60 costumes per character. It's like 4 at most with color variations. Mabye 1 more for these stupid revenenat characters.
Only thing I get why you can't change it on the fly is gear, which often doesn't make a huge difference anyways.