It really is too Snidely Whiplash for me. It eliminates all the mystery in his character, which I felt made him so fascinating in the final film. Also, the aliens are what they are in that draft, it seems - very little mystery, we know what they're gonna do and what's gonna happen. But the larger framework of the Engineers, the expedition, the characters, the medpod scene, etc. - that is all genius, and I'm glad they expounded upon it in the rewrites.