When players die in RTCW (without a gib), they say "oh! medic!". I think it would make playdead much better if that sound would play when you used playdead, it would make playdead more like the actual death in the game.
That might not be a bad idea. I still like my idea where you can limit how many corpses you can have on the map. Having several bodies just lying on the field for the whole match would prove difficult in finding players playing dead. and with the crying for medics would make it sound more believeable as well.