A lot of old Atlus games.
Brigandine in particular. That was probably my favorite PS1 game. It was a strategy RPG where you fought over a map (sort of like in Dragon Force or those Aedis Eclipse games from Idea Factory, but you had hex based, turn based combat for the tactical battles).
Thousand Arms and Rhapsody were ones I never got to play (broke at the time)
Tactics Ogre and Ogre Battle probably wouldn't happen, but would also be neat to see. (I actually would love to see an OB remake for the Vita, it's sort of a RTS so the touch screen would be very helpful, but Matsune is now at Level 5, so probably not...)