Dissidia Final Fantasy, a FF Action game with characters from all games?

http://finalfantasy.wikia.com/wiki/Dissidia_-Final_Fantasy-
http://www.square-enix.co.jp/dissidia/

Ok I'm not that much of a FF fan, but this action game sounds interesting. I hope more characters from VIII and IV get included into the game, looking foward to see Dark Knight and Paladin Cecil, Kain, and Seifer in the game :thumbs: