Which came first?

@Shambs..

Yes that Alien 3 script does have as i have said, seema to have some of its unused ideas that are then used in future movies. Each movie in franchise seems to borrow some unused concepts from a previous and Prometheus Mutation Elements could have got inspiration from that Alien 3 draft.

@djamelameziane

Indeed Ridley left us some interesting thoughts, just as he said if we was to do a Alien 5 he would visit the Alien homeworld... does he mean Xenos? He could meant Space Jockey.

Likewise by he did not want to meet God as being something other than Engineers but it could be the Elders, you see the Elder Scene was cut for a reason and he was not happy at the look of them and they did not seem so God like but frail.

Also a lot of the Engineer scenes got cut down, scenes that appeared to show the Engineer to be more than just a mindless thug hell bent on taking down mankind.

To me this points to a redesign to the Elders, and a portrayal that the Engineers are now intended to be mere servents created to perform tasks that the Elders no longer have to.  So yes similar to how David was created to serve Mankind.

We can not however rule out that their is some higher being or beings at the top of the hierarchy i.e above Engineers and Elders, and would these beings be Humanoid? or something else?

Who knows but i guess we would find out in Paradise.

They also built a cathedral dedicated to the creature

@Big Dave, considering the fact that they used a combination between that early Alien 3 screeplay and the Star Beast proyect; it is quite posible that there is still old material for the sequel, like the Dan O' Bannon' s original script (see the Svanya's Thread) which has some religious style elements in relation to the sacrifices and the life cycle of the monster.

@Oduodu,

"Redant Why do you think the engineers are half the size of the space jockey 
in alien ?"

This is such a good question! and know I not embarrassed by not seeing this observation at all. Good point Oduodu!

All I can say is when I watched the Prometheus film I thought wow so this how they are going to explain what the space jockey is underneath what was sitting in the chair on the ship in the Alien movie.

To me the Engineers' space suit looks like the space jockey. At this point I am not sure I can confidently say that the script writer and Scott had this intended purpose to make us think that the Engineers in their space suits are supposed to explain what the space jockey is; but, you have to admit they look really close. 

And yes yes yes I know the space jockey looks like it is all bones. Those bones look like they go right into the head right??? Yeah how about this for real problem. Remember the scene where they were reanimating the head. Well when they are looking at while it’s on the table they don't realize it is wearing a helmet till they scan it. I know, I am frustrated by all of this as well.

I just want this to be a bit easier and in some ways I love this stuff so much but I can't speculate on it so much either. I just want to enjoy everyone’s ideas and the films too, and my own. So when all this competes too much I just go with my gut instinct on this stuff. 

Redant

http://www.prometheus2-movie.com/community/forums/topic/27017

You might find this thread I started insightful.