Just got back from seeing it. No, not in the top tier, but easily the third best movie in the franchise.
The practical effects were great, the script was very tight, the acting -- especially Andy -- was fantastic.
I thought we got just enough worldbuilding -- a terrible new world; new depths of Weyland Yutani's blandly evil ways; more info about the line of synthetics Bishop was a part of; an actual answer about why at least some Weyland-Yutani folks want to monkey around with this stuff; and a great ticking clock (even if those were the most densely packed planetary rings ever). I also thought them playing with zero gravity was a nice new element to add to the movie and it gave us that great set piece of the whirling alien blood.
I'm one of those people who likes Prometheus' ambition, even if it trips all over the Ridley Scott of it all, so I thought the references from it were fine.
More intrusive, I thought, was the aggressive tying this in to Alien and Aliens. We didn't need it to be an explicit sequel, we definitely didn't need characters repeating iconic lines from each film, and the "reappearance" of Ian Holm was pointlessly distracting. This film was already showing us a new synthetic model -- we would have been fine without the necromantic stunt casting of Holm.
No idea if Fede Alvarez intends to do more with this franchise, but he'd be a welcome presence if so.
