I knew Ridley Scott was involved as a producer, but I had it in my head that his story suggestions were strictly to keep things in line with prometheus 2. I hadn't even considered the possibility of Ridley offering up suggestions from his own alien 5 treatment...
HuDaFuK - I vaguely recall reading somewhere that blomkamp had made some story changes to his base-idea after talking with Ridley Scott. I'm just not sure if those story changes were minor or major...