I have to agree with you in 'concept'. While I admit the "Nazi" look is definitley eye catching and not easily overlooked, I'm a bit on overload with the "Space Nazi" theme myself.
As for the miniatures themselves, from everything I have seen online, they look outstanding as for quality and detail and repeat what I've said sometime in the past.
I think (scale permitting) they will work great as 'light / regular Infantry' for WF's Great Coats.
NOW.. 'someone' really needs to come up with an alien set with (lots of) variations, especially heads. Also enough of each head variation so that the entire set could be built as "Human", "Bird" (Owl perhaps.. its different), the usually popular "Reptilian". After all they do have a distinct fierce / powerful look to them.
And yes, I know there are lizardmen out there. However, I dont think they could be over looked as an option simply because, "its been done before".