Wow. People really want the obscure Japanese characters! Ryo Suzuki should be a done deal, as should all the characters from the first game. No need to remove anyone!
Shame Streets of Rage, Grandia, Shining Force, Phantasy Star, Bayonetta, Yakuza, Valkyria Chronicles, Virtua Anything, Virtual On, Altered Beast... so many unrepresented Sega franchises! Add 'em all!