If they could do gibs in quake, i bet they can do (at the very least) rudimentary arms and legs and heads and chunks flying around now a days.
I say no, because it's just going to create more lag, it's just another thing the client and server has to process.
Chop off me arm, I getz a new wun. Wiv Powa Klaw stuff...an' Dakka. Take off me Legs, an' I getz new wuns, like dem Eavy Mek Nob suits. Shoot out me eye, I getz sum new Cybork partz for it. Ya cant put down an Ork by dismemberin em, ye slimey umie Git! It jus' gives dem Pain Boyz n Meks sumfin ta do.
@Blaze: this is the 2000s right? What I mean is, this is a next gen platform/PC game, and I for one dont really want the same old "dude died-character model fell over" mechanic. It would be interesting to see what could be done.