I enjoyed Romulus a lot, I'd say it is the third best of the Alien films, although obviously still nowhere near as good as the first two.
I definitely agree with others about it being unnecessary to repeat iconic lines from the other films, I always find it takes me out of the movie when they do things like that. That one line didn't even make much sense being said to an alien drone rather than a queen too IMHO.
I didn't mind the CGI Ian Holm, but it was a little iffy when talking. I hadn't considered it was originally supposed to be David as the android, I had assumed maybe the script was originally set further into the future and was going to be an homage to Bishop (what with the android also being named after a chess piece and missing its legs)!
I was actually a little surprised they had any Prometheus/Covenant in there, maybe Ridley Scott insisted on it? Given the lack of a queen, I assumed Scott had gone back to the cut concept from Alien of the creature morphing people into eggs and that's where the facehuggers came from.
Andy the Android was awesome, I'm glad he (more or less!) survived. Seeing the intermediate phase of the chestburster growing to full size in a cocoon was cool, I'd always assumed the alien would just slowly grow and moult its skin multiple times. I'm sure Giger would have approved of the cocoon design!

The new Newborn at the end was OK, I liked how it looked a bit Engineer-ish but I didn't find it especially scary.
I thought they did a good job of replicating Alien Isolation's '70s technology aesthetic while also trying to make it seem like ruggedised future technology. It was fun seeing the telephone save stations in the background of some scenes.
I really liked the idea of bringing back Big Chap, it was quite unexpected but I wish he'd still been alive and menacing the new cast rather than already dead when they got there. I was actually quite looking forward to seeing him in action again!