I don't like using costumes from 'mixed' (or as the game states, 'Other') events, all because of the fact that you're never gonna use those combination of characters again. You most likely wouldn't even use all event boost characters in their own event for Challenge and VS because of the focus to scoring. Seeing your entire band match is really cool but for mixed costumes, realistically your best bet of seeing a matching band is in Multi-Lives, and have fun trying to get that to happen with randoms. A full band also has the advantage of having correct places of where each character goes (which is why I really want a strong score skill Pure Kasumi to release sooner rather than later) but that's more me being me and wanting everything to correct. I guess that applies to my costume problem too, huh..?

But I am absolutely terrified for the mixed event that's gonna release which has the costumes that I'll really, really love because I'm never gonna see the matching chibi set.