I was talking to a friend about what perks we would have liked in the game and figured that I may as well ask you lot. These are what I came up with that fit with the game as it it:

Leap of Faith - Jumping while sprinting causes the character jump further than normal. A running jump. Simple. (no skill, it should just be there)

Rogue - Be able to fire an arrow while sprinting. (Marksman)

Rearguard -Holding down the attack button while moving backwards causes the player to turn suddenly and shunt away the enemy behind them. (two-Handed)

Brick Wall - Moving objects do not harm you when in full heavy arnour - those light-speed cabbages will harm you no more (Heavy Armour)

Nightwalker - Take no fall damage while in Sneak Mode in full light armour if you are not detected (Light Armour)

Mage Sprint- Be able to run and cast your spell. [some school I guess, restoration]

[insert clever perk name here] telekinesis becomes powerful enough to pick up and move any object/living creature in game (including people)