Conjuration already has many necromancy related perks, plus you can perma-summon or reanimate if you master conjuration.
We've practically been to Hircine's Hunting Grounds before, Bloodmoon for Morrowind. Sure it wasn't actually the Hunting Grounds, but it was pretty damn close.
Mortals can not become Daedra, Lord Sheogorath told us this in Shivering Isles, and I believe it is in a lore book somewhere.
And lastly, they won't make a DLC that requires another DLC (Dawnguard and Silver Hand guarding towns during full moon).
The rest of it is pretty good. I definitely would like Werebears and Werewolves in Skyrim. We don't have Werewolves in Skyrim yet. We have Shapeshifters. Forced Lunar transformations would be great.