Yeah, I suppose Falcom would fit in there as well. Can’t really decide who’d be the likeliest between Adol, Estelle, or Rean though, as I don’t have much familiarity with Falcom, but I think Estelle would be cool.
As one of the resident Falcom guys, I can safely say that
yeah, I'm not sure either.
Ys is by far the more influential series, but Trails seems to win out in the popularity department (Though, I suppose a plot-heavy game with tons of characters and multiple games in a row is just made to build a bigger fandom than a string of infrequent games that arnen't as connected). I
think Estelle would be the Trails rep chosen, since she's prominently featured in the anniversary logo, but Rean's been the main character (Or at least,
a main character) for five game straight now.
Something worth noting is that Kondo(?) has addressed Smash in an interview, saying Adol would be his first pick, but then admitting he didn't know how Adol would play (Most likely because Adol has a habit of losing all his old gear and getting new ones between games, not to mention the multiple different playstyles). He instead went to Rean, saying he'd fit in because he uses a sword. Going off of that, I'd
hope that Adol would be the one chosen, because when you redo every stage in the game for Steve %$#@ing Minecraft, tying together a swordfighter with some various assorted magic artifacts should be a cinch.