A remaster of Persona 3, incorporating the best parts of the PS2 and PSP seems the most likely to actually appear.If you have a PS3 or PS2 Nocturne still plays very well. Though I agree on the rest, with Persona 3 having no good version, DDS duology PS3 version having issues, Persona2 Eternal Punishment locked on the PS1, Persona 4 Golden trapped on the Vita.
P4 vanilla is playable on PS3 though.
They are still pushing P3 hard with that dancing game.