I'd like to be nostalgic and have two classic costumes for the returning characters, apart from Sherry obviously, her in a little girls dress would be weird, but maybe they could make it work.
Leon: RE4, RE2 primary costumes
Chris: RE5, RE1 primary costumes
Ada: RE4, RE2 primary costumes
Give the remainder of the cast alternates costume too. Knowing Capcom we won't get any classic costumes, we will end up with stupid costumes that detract from the immersion alas RE4 and RE5, RE5 being ridiculous with the costumes.
Leon: RE4, RE2 primary costumes
Chris: RE5, RE1 primary costumes
Ada: RE4, RE2 primary costumes
Give the remainder of the cast alternates costume too. Knowing Capcom we won't get any classic costumes, we will end up with stupid costumes that detract from the immersion alas RE4 and RE5, RE5 being ridiculous with the costumes.