The only 'wow' factor in his kit is his Ult. His Q W E do not make much sense in terms of his character design. (In a way they do, but terribly executed; not in the least fear-inducing)
Him and Irelia. 
They both have so much potential!
Nocturne is very good. I dont think he needs a rework. 1 kill granted to him early game and boom, hes ulting bot lane getting an ez double the rest of the game. Late game is the only bad thing about nocturne as he relies heavily on people being away from their team.
as a former noc ,ain i was severely disappointed he didnt get any assassin changes, my last hope for him is the diver update.
He recently put in the VGU list confirmed by Meddler, claiming they will focus on making him a proper Assassin in terms of both visuals and game play.
His kit is the most normal and perfect wtf do you want??? He is balanced, the only failure in this game is nunu and he needs a rework.
