Sorry but I don't buy Resident Evil characters can't translate to Smash.
Don't get me wrong, I can understand Sakurai having some problems in implementing Jill/Leon/Chris in the game. That probably happens frequently with most characters, I don't believe all the development process for each character is 100% smooth and easy. But in a game where we have a playable plant or Duck Hunt duo, I don't think RE can't work in Smash.
I mean, we're discussing Phoenix Wright as the potential frontrunner for a Capcom rep. I like him and I want it in Smash but he wouldn't be less strange or complicated to make him work for Smash than Leon or Jill.
He was in Marvel vs Capcom, but characters like Chris, Nemesis or Jill also appeared there.