Well, in the absence of any usable loot drops at all since A3Normal.
That's... Odd. My character in nightmare is reliably getting Legendary drops every few minutes, and quite a number of them trump the best auction house gear from normal mode. I'm curious how pimped out your gear must have been to not be matched yet in nightmare...
Rune unlocks: I like the ones I have. Arcane Torrent + Disruption, Chain Lightning, Magic Weapon, Familiar+Sparkflint, Wave of Force (or Fus Ro Dah, as I like to call it), and the ubiquitous Diamond Skin that every Wizard has to take. (Wait, tell me again how we won't be required to take any one spell, but can choose whatever spells we want?)[/quote]
You are playing a stand-and-channel mage, but taking 2 melee skills? You're doing it wrong ;)
I don't get why anyone takes Diamond Skin, unless they are tanking. It's a waste of a skill-slot - sure, it's an escape mechanic, but it doesn't deal any damage (ditto for teleport). You are generally better off taking Frost Nova or Wave of Force with knockback - they offer about the same ability to mitigate damage, plus they deal damage themselves.