So did I like the movie? Yep. But I also liked Prometheus. If you are looking for a continuation of the story that was started in Prometheus, more spectacular scenery of the Engineers including another Engineer ship and a fantastic city of Engineers, and then on top of that more symbolism...you will find those aplenty in this sequel. No explanations are handed out to you either. Rather, the director assumes you are intelligent and in watching the events unfold on the screen, you actually get quite a few answers about the Engineer civilization and the continuing story of David the android. Ridley Scott does a great job of framing the entire Alien saga as a basic struggle between a creator and the thing that was created. It's actually kind of mind-bending and fascinating.
Does a creation owe its creator anything? It's that kind of basic question that is answered in Alien: Covenant. I just hope there are more movies, because I have different questions now than the ones I was left with at the end of Prometheus.