I watched Alien: Covenant for the first time last night, and I enjoyed it.
Scott was definitely trying to capture the feel and general tone of Alien, though in my opinion he partially succeeded. The art style, and attention to keep things similar to the '79 classic was very well done, as was the overall soundscape.
I found the film felt rushed though, and I didn't have time to get to really know, or to truly care about, the human crew minus David and Walter. That's a "modern" trend though with the franchise, and that's something I'd hoped they would have reversed, as the original films had a strong human element.
The plot was also quite predictable, but again, it was fun. I do like how it works with the rest of the franchise, in the sense that this was advertised as an Xenomorph origin movie, though it doesn't contradict what's come before, such as in Alien vs Predator and how Xenomorphs were on Earth during ancient times.