I'm not really a fan of huge overhaul mods like OOO or WAC, but Oblivion's vanilla level scaling for enemies and loot is even worse. I used to use TIE, but since Nuska released his character overhaul, the new NPCs added by it look hideously out of place, so I've had to remove that from my load order as well. I know Dynamic Leveled Lists basically solves my problem as far as monsters are concerned, but is there any mod that fixes the awful scaled loot lists (marauders in Daedric armor, etc) without adding a million other things that I don't want?

It's an older mod but I have used http://oblivion.nexusmods.com/mods/3321/? for this and like it very much. The mod comes in two versions, scaled and unscaled. You'll be interested in the unscaled version.

I really like Maskar's Overhaul. I know you said you did not want an overhaul, but Maskar's is very customizable so you may be able to tweak it into what you want. It is really easy to install and uninstall, so you could give it a try without having to go through a lot of work.