The answer is simple Warbikes!!! WAAAGGH!! They got it all; speed, metal, chainsaw fists. What more could you ask for?
Oi, watch who ya callin daft!! Course erray prappa ork know dat ya aint eva 'ave too much dakka. I givin ya a pass dis time, but cal me a daft git one mo time and I'll come ova der an' give ya a good krumpin'!
Mega Nobz will be good to go Stomp some 'Eads; I hope they're a core class and not a requisition based one.
Dat would be awesome if a piece of your equipement you can gain is a few grots. Maybe one for ammo, one for shootin that goes on yer back! And one for a snack!