Didn't read through this thread, but am I the only one who doesn't want to see this take place in a highschool setting with a bunch of teens leading the charge like the last two games?
One of the things that pulled me into Persona 2 was the setting and characters. Typical, non-sexualized female lead; an adult (20-something); took place in an office setting. It was so different from anything I had ever played that I put up with the sluggish battle system all the way to the end.
I want to see something different. Not just for the sake of being different mind you, but because I genuinely think the Persona series can cover a lot of ground that hasn't been covered before in a JRPG setting brilliantly. It taking place at a police department with a new recruit starting on his/her training day could be awesome, for instance.