You could always go grind the hell out of non-class skills (IIRC this doesn't boost your level). Casting spells in any wilderness areas counts for improving them, for instance. With some mana regen potions you can spam low level effects and grind up high enough to cast good stuff. Invisibility is a great counter for Gates, for instance. Oh, and jump everywhere, because you can literally bounce past some enemies once your athletics is high enoughAnyone got any recommendations for level-balancing mods that can be applied to a game in progress? Otherwise, I might finish up some bits of business with my character and then retire him and declare Oblivion finished, at least for now. It would at least be completely in keeping with the way I've been playing him to completely abandon Messers Jaufre, Martin, and the entire province of Cyrodiil in their hour of need.
Also, are you ruthlessly stripping all guild houses of food items to make potions (which will grind your alchemy as well as have you drowning in gold)? Because you should do that, too