I wouldn't necessarily compare Dynasty Warriors with Soul Calibur, they aren't even the same genre. Although if you are gonna play a Dynasty Warriors game, and you don't mind not having any english voice acting, I'd reccomend Warriors Orochi 3, it's definitely the best in the WO series, and gives you all of the Dynasty Warriors and Samurai Warriors characters to play with, as well as Achilles from Warriors of Troy and Joan of Arc from Bladestorm. DW7 was pretty good, though. But if you hold on a bit I think 8 is coming out soon, and it's PS3 exclusive, you lucky bugger.
I'd reccomend letting players do their own searching for Persona ideas as I've ran into some really good ones from mythologies and fables and such that I never knew about. You learn a lot doing Persona RPs, that's for sure. At the same time you do get a lot of trite and cliche ones, so while I do want to reccomend leaving the decision open, it may be good to restrict it to one mythology. If I remember correct all of the P3 cast's initial personas were Greek mythology, while all of P4's were Japanese mythology.
Also, holeeee crap that is a lot of work to put into a fanmade concept of all things. The thing that got me was that they had pictures and links and videos and music and everything. If it weren't for you telling me it was fake, I would've assumed it was real speculation for a real upcoming game until I noticed they used Brick In The Wall as a dungeon theme.