Well you see even with the kill animations melee still seemed rather boring compared to magic in that demo, better than Oblivion don't get me wrong but without the odd dismemberment kill animation i feel it will get stale rather quickly. I'm just trying to help bethesda make melee more interesting!
Having enemies fountain blood in the air, or having limbs flying about would make me lose interest very quickly. There are very few enemies I feel the need to hack into little chunks. From the demo and the screenshots that are out, I think the melee combat is fine without tripping over dismembered limbs or playing kickball with a head.
I know others will have different opinions though.