Board Thread:Warhammer 40k General Discussion/@comment-218.186.115.26-20131004131155/@comment-6078851-20131005024837

well, in the yuatja, first off we have a race that has no interest in cooperation with other races but an extreme interest in proving to the galaxy how much better they are to the rest, namely in hunting them. secondly, how good is their cloaking tech in relation to 40k? if it's detectable by the races of 40k then, personally (as much as i love the yuatja, alongside aliens) i don't think they'd survive long, but if their cloaking tech allowed them the same reign of freedom as it does in their own lore then they would have to rate as the same level of threat as necrons: the ability to move unseen and unheard by anyone would mean the denizens of 40k would have a serious problem, unless they got fixated on the glory of bagging tyranid skulls, which i imagine they totally would :)

in terms of a viable galactic threat though, given that their entire culture is based on 1 vs 1 hunting, i still doubt that they would pose a threat, merely an 'eccentric' race that hides in the wings and would avoid all out confrontation.