I love the deck, +1 from me, but I must ask, why only 3 Goyf?
At one point I was running 2x Grove of the Burnwillows and 3x Punishing Fire, but decided to return it to the more traditional card set, if You want to try it with, cut 2 fetches, 1 Forked Bolt, 1 TNN and a Ponder for them.
It is not really Punishing RUG anymore so why not throw in Monastery Swiftspear and you have a delver deck ?
I've decided with Deathrite over swiftspear because deathrite has a much better long game.
Just me being totally sick of UB delver, I'm happy that this deck is at least some different.