Even if it doesn’t happen the remote more plausibility is making me happy to spread the word on him.
But yeah it’d either be Adol or the current Kiseki/Trails protagonist Rean (this is coming from Falcoms own presidents mouth on who he said he’d put in if he could put one of their characters in).
Although the swordsman line is odd since Adol also uses a sword, (but Rean would certainly be our first playable eastern styled swordsman if in the low blue moon chance this happened).
From this interview but it casually talks spoilers from bits of the Trails in the Sky, and the Crossbell arcs in regards to the upcoming localization of Cold Steel 3 (so if anyone cares they can avoid it, since all 9 of the Kiseki games are so interconnected and all).
https://www.esterior.net/2019/07/anime-expo-2019-an-interview-with-toshihiro-kondo/