Kings Temples and Spoilers

Theory but possible spoilers below. So the latest stills posted showing the inside of the "temple" and the ramps inside got me to thinking. Also, Ridley's statement of what existed before us, and the idea of every king having his reign and then dying. Ancient civilizations on earth building new pyramids for every new king---as a tomb. Here's what i'm getting at.: There are five temple complexes on the alien planet. They have interior ramps which were probably used to help in their construction. Thus, they are not temples---they are TOMBS. The head inside the tomb they go into represents the face of the King who is buried there. The particular ampules, which appear to be old, somewhat destroyed, tipped over contain the DNA of the creatures that that king manufactured. The body and skull/helemt that is retrieved and brough back to the Prometheus are the body of this King. The standing space jockey uniforms belonged to older kings who have died. My thought is that the Engineers have a portion of the universe that they rule. The star map room represents this area. And they can manipulate DNA. My theory is that as a King dies, the new one who comes to power remakes this area of their dominion as he sees fit. Proemetheus arrives on the planet just as the new king is heading out to claim his right and remake the universe. Hence the stacked neat DNA Ampules that he will use to rework those planets, including earth. The pictograms weren't an invitation, they were the ancient earth peoples' acknowledgement of the Engineers power. This also explains the original derelict found in the original Alien. A king from long long ago who was on his way to rework a planet, and was infected by one of his own creations. He sent out a warning to his fellow engineers not to try to retrieve him.