Wanted to revive this, on account of Persona having three new games coming out: Persona 5, Persona 4: The Ultimax Ultra Suplex Hold (or Persona 4: Arena 2) and Persona 4: Dancing All Night for the Vita.
Yu's chances have increased, assuming Sega/Atlus don't decide to advertise the new protagonist.
I like to make PSASBR move-sets. Here's a few:
Never say I don't contribute: I'm The Idea Man.
I gotta admit, even though I don't really keep up with Persona games, I would say that if I had to pick a Sega character, it would definitely be Yu Naurkami.
Also, it'd be awesome if Shadow Mitsuo shows up on a stage with his 8-bit music theme.