I'm not really interested in them. If there are gibs, I prefer them to be Unreal-with-violence-turned-down hamburger meat that flies out when you stab someone, while somehow leaving the character model unscathed.
Same thing with blood- just make it there to acknowledge my hit, then make it go away.
The problem with Giblets is that I never see the point. The only games I can think of that use them liberally are so out there, just so not into immersion, that they're ultimately a matter of enhancing their selling point through the use of taboo.
I mean, if Mortal Kombat were realistic, with all sorts of gibs 'n what not, you'd feel like a sick fuck for beating your opponent, who would be at the end, a sobbing, horribly mutilated and defenseless person, put there by your own actions.
And then you'd have to kill them.
Even when its mindless evil drones, it violates the sense of their being unrelatable, heartless monsters that makes it okay to get pleasure from fighting them.
Their having bones and organs and flesh humanizes them, because we're innately tuned to seeing red innards and being alarmed, afraid, and we instantly assume that the one whose bloody tissue is exposed is in pain.
Wait, where was I going?
Gibs can add to a game, especially if its over-the-top, but too much detail in giblets can impose upon a game a level of realism that it may not be prepared for. Really, a lot of developers should get more creative with gore rather than just more realistic.