I'll tell ya what I think's wrong:
1) The undead team already works fine. The chaos or HE team wasn't dismantled to create their variations. The undead shouldn't be either.
2) Werewolves hang with Norse, according to ever other GW source, including BB!
3) The team only has 2 player types with regen, and 3 w/out. This hardly seems to fit the spirit of undead in any game. They should mostly be able to regen, or have apoths for the others (heck, the vamps do

).
4) Back to regen, the flesh golems should have it for sure. I mean how else do they move around, but from the same spells that animate the zombies!! Golems are just patched corpses, surely the necro can fix'em.
5) Looking at the above, the team was clearly designed to push some mins, as not only was the original, and loved, team not needing to be re-worked, but the new positions don't make much sense, IMO.