Great to have your interest! :D 

To be honest, I also like more the idea of having a whole new storyline, but as said before, I don't really have what you'd call a concrete idea on how to make it, so I am accepting any ideas you may have, so feel free to post them here or send them to me in a PM. Also, having a co-GM will be a huge help, due to, well, college some times going full crazy on me and having little free time, so, yeah... :P Oh, and with only one Persona per person, I was thinking to let them have the three stages of Personas as in Persona 4, ya know, Awakened Persona, Ultimate Persona and things of the like, obviously followed by an event in which they have a growth of heart.