I would love for Neptune to be in, she's hilarious, Level 3 would easily just be her Purple Heart form, but really, I can see it either being Neptune or Noire being a Neptunia rep, since in Japan Noire was more popular, and Noire represents the PS3.
Though Honestly, I wouldn't mind any of the Goddesses, since Blanc and Vert would be unique, since one has a Spear, the other a freaking Hammer, lol. Minions could easily be their sisters and in Verts case, either 5pb, Cave or Chika.
PSN: TwilightGundam01.IMPORTANT Twilight in my name Does NOT mean those stupid movies. Noire (Neptunia) for PlayStation All-Stars Battle Royal!, DLC or 2! XD.