Not sure if thread worthy, but it's rather funny:
Since the beginning of Persona 4 Arena's development, Atlus and Arc System Works have been keeping a list of which Persona 3 characters and Persona 4 characters to include in the game. Producer Toshimichi Mori revealed that Ryotaro Dojima was actually part of that list at some point even though he doesn't have a Persona.
Iguchiya joked he would have summoned Nanako instead, but Atlus would have chewed him out for saying that.
Dojima would be so out of place with the current cast it would be hilarious. They should make a side game to Persona 4 Arena where crazy ideas like Morooka, Dojima and Hanako all fight together.