I liked Juni and Juli because I like to think they were M. Bison's bumbling sidekicks lke Bebop and Rocksteady and would always mess things up. I know that's not how they are, but I think it would be funny if that was the case. If I were a bad guy, I'd like to have Juni and Juli on my team.
I don't know much about the Udon comics, but it would be cool if the new character were a circus strongwoman or something like that.