After playing the game on a number of characters on Adept, I decided to step it up a noch...Or two, and bumped the difficulty to legendary. For this new, harder Skyrim, I made an enterly new character, a High Elf that specializes in Illusion magick to control her enemies and make them kill each other for her. She's pretty damn quishy, and can very, VERY easily get one shotted (She wears mages robes, her only armor is gloves/boots, which provide a whopping 17 AR right now.) I have to say, that so far, its shockingly OP, although that might be because I'm only level 17. My Illusion spells work on just about everything so far, and its so much fun running into a fort or a Forsworn camp and Furying everyone and making 5-6 people attack each other at once until everyone's dead.

The other day I ran into some bandits who had just killed and stolen some Imperial Soldiers gear, and were protending to be soldiers and taxing people. They attempted to take my gold, and got a Fury to the face for their trouble. About half way through the fight, they formed a little circle and were beating the crap out of each other, but it went in succession. The orc hit the Breton, the Breton hit the Nord, and the Nord hit the Orc. It was a pretty amusing train-of-beatdown that reminded me of a Tom and Jerry cartoon.

So whats your favorite OP build for the legendary difficulty? And when I say OP, I mean legit OP, not enchanted to the point of 5 million HP, infinite Magicka, and a sword that does 10 million damage.

Not sure what legit op is even with the explanation. I thought you meant no restoration loop, but you don't need that for infinite magicka, so why is that 'unlegit'?

Anyway, I usually play "paladin" builds. Axe or sword with a shield, heavy armor, restoration. I also utilize enchanting and smithing. The only difference between my non legendary difficulty playing characters and the ones that do are levels of enchantment, which don't go as far as what is given as an example in the op. In other words, no restoration loop for me.

Sneak archer that kills his enemies before they even know he's there

Obviously I had to enchant the bow a bit, but not to the point where its ridiculous. A lot of times I'll just sneak attack someone with my bow, wait till they stop looking for me, then attack them again. Always fun getting multiple sneak attacks on my mindless enemies.

I think the only OP character I truly had was my last pure mage. Shes a Breton and was a master in all the schools of magic. I dont remember the exact stats but I know her magika regen was a ridiculous number. She also has like 8 or 900 magika. That, in addition to the 0 magika cost for destruction magic. It was actually unfair to anyone that crossed her. Oh, and she used the Lord stone too.

The Resto loop is what I meant. Its one thing to use normal enchanting to give a school of magic 100% reduced cost, but its another to use it to enchant a necklace to give 3983093484384 Magicka. I've wandered how an Archer build would play out on legendary. How was it starting out?

I only become OP when using the Restoration thingy.
I like to play characters that can kill in 1-3 hits and be killed in 1-3 hits.