I think our standard for alien dialogue should be simply to outdo MagFan's original back-mastered foreign tracks. You've already done that. Avoid "Allah's" if it's easy. Leave 'em if it's not -- We have to pick our battles. Our method allows different passes for different emphasis -- If we get the story right, Trooperman's pass can be for his strength in aesthetics (music, alien dialogue, photo-effects, etc.). We'll have an incredible leg-up on things when it's gone past all the people here at Starkiller Ranch.
To avoid being torn to shreds on stuff that isn't ready, I advise we keep clips to a minimum and reveal only what's ready for mass consumption. Let the "shredding" occur at the level of ideas -- concepts, script, things where everyone's thoughts, opinions, pet peeves, rants and fangs are invaluable and constructive.
Have we looked at the different "Klingon-ese" dialogue from Star Trek releases (TV and movies)? There is such a wealth of alien dialogue from that catalogue that I bet there's a lot of unrecognizable alien sounding dialogue to mine. [I mean for additional characters like the Gungan, the Pod Race announcers, whatever-- not the Nemoidians who are already perfect]
Just a thought.