If PS puts Mi-na in the next Soul game, they can just give her some of Kilik's moves since he's now a mimic character. Also, how much do you bet she'll end up being that one character who insists that she isn't old?
Pyrrha currently has the Omega Sword & Elk Shield, so Sophitia can either get a...
Actually, putting Darth Maul in SCVI would not make much sense because he died long before Darth Vader came to exist. And no, I don't really care about Star Wars' "expanded universe" and any other obscure reasons as to why Maul would still be alive.