Aliens,Engineers,Goo what does it all mean?

DenzelTH, you raise a lot of legitimate questions and I hardly know where to begin to address them. I guess I will go in order. 1. 'When david goes into the juggernaut why there is a dead engineer stood up....? ' - Those were space suits standing upright just like the orange ones in the Prometheus. 2. 'The glass thing David gets the goo out of, looks like part of some other aliens? Maybe thats where the goo originates from?.' - The glass ampule that he breaks off of the other slime covered 4 is the source of the black goo which seems to be undissolved in the clear solvent that it is surrounded with. David places a small amount of the black goo from the one he cracked the top off of on the tip of his index finger before quoting Lawrence of Arabia: "Big things have small beginnings." 3. 'Also what is the green egg thing in the mural room?' - That one is unknown. everybody who watches that scene wonders what would happen in you waved your hand over it or touched it. Is it a mechanism? So answer unknown. 4. 'And the alien being crucified on the wall?' - This is the famous wall mural that appears to depict the xenomorphic life cycle starting from the facehuggers in the bottom R and L corners moving up along the sides to show a human holding his chest? as far as I can tell. Then the top appears to be maybe either a queen or an alien before birth but its a hard symbol to read and then down to the middle which is the born protoxenomorph which looks like the deacon. I think this was originally designed by HR Giger. If I am wrong about any of this interpretation anyone please let me know. 5. ' There are also loads more dome buildings that no one even acknowledges.' - Actually David acknowledges them at the end saying there are many more ships, which we know are likely under and adjacent to each mound. 6. ' I also noticed that the interior of the dome and ship are similar to what the aliens put all over the walls in 'Aliens', its like camouflage. Maybe that's the engineer in them?, ' - Its derived from HR Giger's biomechanical patterns he designed into the original Alien derelict space craft. If you notice the original space jockey is sitting in a curved backdrop with Gigeresque biomechanical patterns like this. The ones in Aliens were far more extreme in design and are supposed to be secretions from the aliens around their nest where the hatchery is and the queen. 7. 'Also prometheus does not carry on straight to alien, but now everyone knows who the space jockey is and what hes doing, the only thing different is that they're eggs not urns and what has made that happen?.' - Ridley Scott decided not to make a smooth transition from the Alien series to prometheus as a prequel. Instead he said in interview that the two movie series share the same DNA or in other words exist in the same universe. He instead elected to focus on who was the space jockey in the derelict space ship. Regarding the second part of this question, Ridley Scott decided to move in that direction of the Engineers as creators of the xenomorphs as bioweapons possibly as agents of change (remember David's statement about sometimes you have to destroy in order to create?). The eggs would be a later development that we are not yet privy to but we know from experience that they are supposed to derive from a queen, so somewhere out of sight they may have developed one. 8. ' Also when the crew are about to enter the muriel room, what is the greeny goo David encounters on the entrance door? Is it alien goo? or engineer blood? or infected engineer blood?' - answer your guess is as good as mine or anyone elses. It is never stated, and one cant help but wonder what would have happened to Holloway if David had given him that instead of the black goo... 9. The xenomorphs as bioweapons are everybit as lethal in the long run as an atom bomb but maybe the advantage is that once they run out of hosts they become automatically extinct without a means of gestating more aliens. We do not know the overall lifespan of either a warior xeno or queen that has not been especialy preserved as they showed in AVP (which I only mention as a possibility as this movie is still of questionable validity. I stated elsewhere that I consider it my guilty pleasure but I do take it with a grain of salt. OK thats all your questions answered as best as I can.