@ Brego:
It wasn't Alien anymore in Gigers mind, it was more of a wolverine biomechanical monster, more Sil than Alien (but that might be a good thing). ADI took his guidance and had a tighter schedule than Giger would've required.
The look of the A3 runner IMO is superb, and perhaps I like it most of all, it certainly was Giger through and through.
What killed the A3 creature for most was that it behaved different than expected. Now imagine it even looked different too.
Then again, I like Alien 3 best out of the whole series...