At least I'm glad that the Switch is $300 cause any higher and we'd probably be paying $500 over here.
At the very least, I can see 3 possibilities:
-They'll add a couple of the more notable characters from those games in, but their numbers will pale compared to the Akanaia, Fates and Tellius games. But I could see the likes of the main Lords(Roy, Lyn, Hector, Eliwood, Ephraim, Eirika, Sigurd, Seliph and Leif) having a chance.
-They'll focus on the more popular games at first, than add SNES/GBA characters for DLC.
-Some SNES/GBA characters will be character costumes for some of the other characters that are put in the game. I mean, if they focus on the classes rather than the characters for movesets for some of the playable characters(any character that isn't a Lord character), you could have character costumes to allow a person to choose which character they would like for playing the moveset. Like make Cain, a Cavalier character, base his moveset around the Cavalier/Paladin, than make costumes of Noish, Alen, Kent, Forde, Kieran and Sully for him to allow players to choose which character they'd like to play for that moveset.