Probably an Imperial wizard since in Elder Scrolls, if you have good magic, you can do pretty much anything in it. Alchemy is a license to mint money, restoration keeps you from having to buy and carry all of those pesky healing potions, illusion can make you invisible for those fights you need to avoid, destruction allows for ranged spells of utter...well, destruction, and alteration lets you use feather and carry more.
My last guy in Oblivion was an Imperial wizard and I didn't take sword or armor as skills and by the end of the game, indeed, probably only about halfway through my playthrough, if that, his light armor and sword skills where maxed out.
I had two weapons, a Daedric longsword that I called Kindness, which was enchanted with fire, ice and lightning damage 5-10 damge over 5-10 seconds (depending on which one, they varied) and Ranged Kindness, which was the same thing, but in a ranged spell. I enchanted my armor with Feather and a ring with Chameleon 100%, so I was completely invisible with the added bonus of being able to attack and remain so.
With magic, there's really no need for all the hassle of trying to repair and all that stuff because you're not typically getting within striking distance, and if you do need to repair and whatnot, the potions you can make more than cover the cost.