I have no doubt the sequence and film overall is exquisitely put together and will be a lot of fun to watch. I just find the overall story thrust to be uncreative and kind of a contrived way out of telling any new kind of story beyond 'more bad robots and aliens'. I didn't see David in the previous film as a character who was headed out to casually nuke all the Engineers without any answers, let alone do any of the other stuff he may allegedly be doing. It just all seems like it's there to boil the franchise back down to the most basic, familiar fan service-y stuff.
I also am pretty sure there aren't any Engineer/human hybrids in this film, though IMO that would be a much more interesting space opera and carryover of some themes from Blade Runner, etc. for me that could be rife with all-new body horror and cosmic questions (with plenty of other Giger monsters, naturally). But that's my weird taste, so whatever.