I think there should be the ability to use a staff as a melee weapon again. In Oblivion it was just magic you could do with staffs, in Morrowind they were mostly used for hitting an enemy or for witchery. Why not combine those two features and make a staff amore valuable weapon?
How bout combine all three? You could give staffs a spell, a multiplier for your spells, and make it a legit melee weapon... the attack button is for melee, I assume there will be a block button, which could be used to cast... and obviously the multiplier is passive... yes? =D