Nemo I like your idea of a game focusing on an evil antagonist, but your analogys need some work.
My dream game would be a perfectly balanced beat-em up, with a character creation system so large every single person could look different. It would have RPG elements much like River City Ransom, but would be a bit more complex. There would be a special move creation system, that uses the 100's of preset moves in different combinations. The stats would grow in a way similiar to a racing game, whereas you are either fast and weaker, or a giant tank of a man. The graphics would be cel-shaded, with slight manga overtones. The game would be overly violent, much like Kill Bill.
The game would have a massive single player game, that allows for co-op. The single player game would have HARD puzzles, great platforming sections, and intense boss fights. There would also be an online game with a turf wars style set up. It would use the city from the single player game and have a turf war system. You could join different gangs, and try to hold the most turf. Or act as a free agent, and help other gangs for money. Or you could be a lone rider, and simply kill all in your path.
The story line of the game would involve demons and the yakuza. It would be cheesy, and the dialouge would be similiar to old kung-fu moviesand old gangster films. The soundtrack would be jazz. No Rock, no orchestration. I mean a sound track of nothing but hard swing, bop, funk, and afro-cuban jazz. This would lend itself very well to the style of the game.
Also no guns, its all hardcore hand to hand combat. Or sticks, rocks, or whatever else you find lying around.
I might be able to get some character sketches up if this thread isnt dead by the time my arm heals.