I didn;t post my advice cause I was checking posts from a rocking ferry and had little time!
Its a good fast orc deck for sure and its unit ratio is right.
So just a little twicking can make it faster, plus cut back some cards that do not help it.
First the rock lobbers. I understand there point, they can be the finisher is your rush stalls, but really, if that happens, its trouble anyways, they may finish off the odd game for you, but most of the time there are a poor draw, in this deck, they are not all bad, just sub-par in this deck.
Also by there nature,. speed decks want to cards in battlefield and keep quest to a min, but if you gave too many weak draw cards that are not units or unit boosters, they create the need to build up quest, something that slows you down.
Troll vomit- Yes pressing the reset button on deck that starts to hold you off and stablize, can win you plenty of games, but three is unnessary, 2 is good, although I am nitpicking now.
Drop the wolf riders. They are great in some decks, but again this is a deck that is already dropping most of its units into battlefield, you may just have a few little units in the kingdom or quest, the odd game they will make the difference in a final waaagh rush, but too often not.
On the other hand, wez bigger is money, especialy if you got all the orcs that benift from damage in your deck, boar boyz and squiges for example.
Aside from those little things, its a fast deadly deck.
That being said IMEO a orc/skaven deck is faster and deadly, in that you can clanrats into the quest and kingdom zone where they can help you out, and STILL boost the rush, not to mention the grey seer, who does that as well but better. If your skaven count is high enough, you can chittering hordes whoich acts as a 1 cost artifical card draw for you, if your skaven card ratio is high enough, this will usally net you a card or two which further speeds you up with out the need to slow down putting stuff into quest zone.
The weakness of the above deck is its a little more vunerable to a chaos snipping deck as it depends more in the one hit skavens, but its faster and deadlyer vs order decks.
Anyother fast and deadly way to run a speed deck is chaos/orc. Its a little slower, but with potential to be faster and just enough controll elements to still finish a game that starts to stablize.
That deck would have the classic rip there heads off, blood thrister/grimgor development tricks, which you want to into battlefield anyways as you have three gors in the deck as well as the servants of khorn, all cheap all the time this deck. Only a tad slower then orc or orc skaven, and only cause you need to get one chaos symbol on the board. Cull the weak and and sadistic mutation grace this deck for speed and options respectivley. Call the weak gets rid of that pesky sellsword you dropped on the first turn that you are tired of having passed arround, boosting the horde of spider riders, goblins and servants of khorn, oh and savage maruders too.