I was going for that anyway as a sprite swap witch just changing the .sff files though keeping the same animations, and you chooses one of them form the set, rather than putting it in the same .sff file and add new animations and recycles it. I as also gonna do this with Soul Calibur chars as well. the technique works well but you have manually choose one the .def file and blackout the others with a ; thing and order pick one
it helps for chars that have the same animation but a different type of costume that has shapes that can't be done in a smart pelleted