If it's for the sake of realism, altho it's easy to think otherwise, not all the veins in animals are major arteries that can squirt blood out of. And even if one's lucky enough to hit one, it's most likely to ooze out blood, rather than spray out inglorious amounts. So, unless one is trying to make a game NOT violent by making it so violent that it is past gore and eventually funny(which is probably because a player's brain does not recognize it as something real), I would say again, it is rather pointless.
But yeah, I know wolfire guys know what's best for all of us already, so maybe I'm just ramblin.
