WW1 MMO game. think about it, get the best players to take command of a given number of other players, and force them to work together to claim land and such. so, yeah, a good deal of the FPS experiance would be small scale skirmishes and snipe fests, and then the order to go over the top comes in. also, respawn several miles away from the front, so you try not to get killed, and just make the whole thing a big operation. mabye 400? players a server at a time. might be cool.