@ 3rd Parties
Capcom
People are really sleeping on Dante. I'm no DMC fan nor do I particularly care about getting into it but after Snake and Cloud, anything that has even slightly touched a Nintendo console is fair game. There's a lot of Capcom stuff I'd like to see before him though, mainly Phoenix Wright and Chun Li but it's not like I'd mind him being in. Besides, I know my best friend is a huge DMC nerd so he'd probably be hyped about it.
Bamco
Heihachi is also another character I feel people severely underestimate, they live to bring up Mii Costumes but conveniently leave him out. Still, he's another Dante to me, I can easily see him in but I'd prefer other stuff from Bamco, mainly something from SoulCalibur. I like what I've played of Tekken but Heihachi himself never appealed to me.
Square Enix
Dragon Quest. Again, I can see it happening, though I feel Geno has the advantage of being acknowledged by Sakurai. It's still Square's most likely series to be represented next but I don't think it'll happen unless they really go all out with 3Ps. If we're going by that leak that claimed no Geno, then it's either DQ or another FF character, who could be either Sephiroth or someone from the SNES era like Cecil or Terra Celes. rip in pepperoni crono
Again, same deal with Dante, a lot of stuff from SE that I want to see but only so much space to go around.
SEGA
Really no ****ing idea as far as new series go unless you wanna count Atlus franchises as theirs in which case be my guest, we're getting Part 4's protagonist, that's my bet.
SEGA only does Sonic nowadats so might as well give them Tails and Shadow, I'd be super okay with that even if my interest in Sonic characters begins and ends with no one(still love the games tho s2).
Personal oicks would be Phoenix Wright(with Edgewirth as his Echo), Chun Li, Nightmare, literally anything from Atlus and mother****ing Crono.