Something where someone can hang back and snipe successfully, but also rush in with an SMG and still have fun/perform well.
Actually, it'd be really cool to have a tower somewhere that could overlook part of (but not all of) the field and make it a sort of sniper's hide, with two or three windows to shoot out of. Maybe allow 400fps semi-only in the tower, for a bit of a range advantage... but give it a couple different entrances to make it hard to hold onto without a small group, and even then someone on the ground below can overarm a grenade through one of the windows and into the hide.
wat do u mean by operating costs?
Employee pay, cost of electricity (which is HUGE in large buildings), inventory stocking costs, building rental... those kinds of things.