Dear Mr. Ridley & FOX Studios,
What the hell are you thinking...? How does an ancient Space-faring, technologically advanced civilization (with its only one small city, mind you...) get waxed by just one of it's own ships? Hell the neighborhood bum puts up a better fight when the owner kicks him out of the "Kwickie Mart"....
How do you base a whole movie "Prometheus" over these ancient beings and there creative ability using black goo that they have seemingly perfected over thousands of years on a gigantic moon/laboratory with all the technology equipment at their disposal and then debunk it within the next movie with "I-Robot" in a few years having only a Sanford & Son's junk place/workshop? Yet he conjures up the "ultimate-being..."
Why would you place murals of these Engineers in the Promotheus movie having a version of the Xeno-Morph/protomorph and then say it was "purely decoration..." and say David, created these creatures as depicted in AC?
I could go on and on, but this is part of story-telling and good writing. It is what gives you a core of loyal fanbase that will bring others into the fold as well. You are not going to impress millenials with whiz-bang effects, pretty scenery, and graphic violence...they have already seen it all. To enthrall an audience, you need a good plot and good storytelling......!
Damn, I need a drink after all that...