The original script was pretty much what Prometheus is now but with less 'AI is baaaaaaaaaad' and more 'ancient aliens created you' to it.Did the early script not have huge proto-aliens, a little like the white things in Covenant?
In any case, a tv series is the absolute worst idea, because it won't be Alien it'll be more AvP Requiem. Or the V Series.
In it the Engineers created humanity to solve its problems of the civilization dying (in that they had engineered themselves to extinction) and seeded worlds with life. Humans were the best result but went bad- they took a human and taught it the engineer 'way' but that guy wound up being nailed to some wood triggering the Engineers to bioengineer a flood (of killing machines). In the script the engineer pretty much says "you were our greatest hope and biggest disappointment". So Shaw faces up to the fact her god is false, the beings who created humans hate them and want us all dead.
These ideas can be seen when David does the same in cut sequences of Covenant.