SSFIVAE modding - is character replacement possible?

I haven’t been keeping up with new developments in SSFIVAE modding, and the information is scattered around and a little difficult to search through, so I apologize if this information is already available.

Is it possible to replace characters entirely? Like, if I take character-A and give it a new costume mod and character-B’s moveset, effectively making a new character, can I replace character-C with this new character so I don’t lose the original character-A?

You definitely can essentially make new characters, like I’m working on a Urien moveset right now, you cannot add new characters without replacing previous ones though.