As one of the GW design teem once put it, there are three levels of 40k fluff, Lies, **** Lies and Heresy. I agree with the ones above that FFG is doing a great job turing these re-con filled, contradictory and unpremeditated bits of background and turning them into a viable game with some level of internal logical reality.
As I think people could guess from some of my posts, Orks wouldn't have been my first choice because of the psychology, I can understand why FFG chose them for one of the first two xenos to be released. The Greenskins have a lot of loyal, **** near fanatical fans out there, and they are Iconic. Probibly the most iconic xenos army. Hell, even GW's 'arboyz turrnies are themed after them.
