I personally think Dorman's design was quite good. The body itself looked fantastic, but the head was a little oversized in my opinion, although at least it had a more elongated style, rather than the stockier version they've gone with for the film. Mixing elements from both his design & ADI's version would definitey be an improvement, but I think the predalien they've come up with looks great anyway.
For those who don't know,
this is Dave Dorman's version of the predalien.