Automatic recharging enchanted weapons from Morrowind, this doesn't mean we get the weapons from morrowind in Oblivion, but the enchanting system.
In Oblivion if you have an enchanted weapon, you can use it for a while, but then it's finished, and you will have to recharge it with a soul gem. Now I hate this. I liked the Morrowind version better, that enchanted weapons will recharge itself.
So a nice mod would be self-recharging enchanted weapons.
Yeah that realy makes the game tricky :-P. Why not just drop a bunch of daedric stuff along with it? I know what hes saying, i sort of miss it to. I havent played a mage yet, so this might already be implemented, but it would be nice if a mage could regcharge his/her own weapons without a soul jem.