I would almost go with the Goblin Runner, Goblin Scrabbler, Goblin Backstabber, Hate and anger deck, but if you want to make it uruks only, I agree with sweet, and probably dump the lurtz and shagrat for lower costing minions.
I need Lurtz and Shagrat for some minor early pressure, and also to utilize
Uruk Regular at its full potential (for example I almost always play
Ithil Stone from Shagrat at sites 2-4), they are also here to give a false feeling of safety to my opponent while I gather the swarm in my hand. I used to run 2
Saruman's Power in earlier versions, but I always just cycled them so I cut them for an ambition and an
arfm. That said one copy may find its way back to the deck, but I haven't met any deck that made me want to play them (not even knights).
Hate and Anger on the other hand looks so cool, I will have to test a version with it.