I don’t have high hopes for any more Square Enix representatives, honestly. Which makes Sephiroth a bit of a bummer since they could have represented another franchise or, at least, a different game in the same franchise
Obviously I'd rather have a specific other swordfighter, but Travis would be by far the most justified and unique one. In terms of Namco reps... I mean, you do know who I want in, what the TRUE GAMERS want, but a Tales rep is very clearly the most likely.
I kinda justify imaging Klonoa in Smash by just going: "Oh, well they very clearly want the franchise to be somewhat known, and they develop smash, sooooo why don't they throw it in? I'm sure Nintendo would be OK with them throwing in another one of their reps," and while that does kind-of make sense, I think it's easy to say that he's to niche or obscure to get in.