Personally I think re-animation is one of the coolest abilities in oblivion which you get after the mage's guild quests when you acquire the staff of worms, which is able to reanimate the dead for a period of time. Now I think this is one of the best rewards for quest completion I've ever seen so far, everything else like money, spells, items I could have gotten elsewhere or bought, there's only one problem it's rather useless :shrug:. Now idk If I'm somehow I'm using it wrong but anyone I reanimate just stands there and follows me, doesn't attack or block or do much of anything, and I think if reanimation were to be incorporated into Skyrim the dead should be able to do something in the way of attacking, blocking or even just distracting the attacker.
But of course does anyone even want re-animation in Skyrim?