SwiftyMagee: I've used the mod Scion of Lionheart before and it's pretty good:
http://www.moddb.com/mods/scion-of-lionheart It changes the game so that you level up a lot more, up to 280 levels instead of the vanilla 70. It also changes and adds new perks.
A mod that's a bit newer is Compact Skill. It alters things like NPC companions, skills, perks, enemies, and other features. I personally haven't tried it out, so I can't give an opinion on quality, but I might give it a go.
EDIT: I read some more about the Compact Skill mod, and it looks like it's in Russian. Since I don't speak or read the language, I'll probably give it a pass. The Scion of Lionheart mod still looks like the best mod to go with.