I quite like the strategy they are using for the show. It's essentially a reboot of the game stories but told in a completely new interpretation. There's a lot of the same story elements (like "artifacts"), plot ideas, settings, characters (and presumably their arcs), remixed into a fresh narrative.
I like the production design, the budget seems sufficient to look suitably impressive, the FX look good, the acting is good, and it takes itself seriously without any cartoonishness.
There was a time when I wished for such a treatment to the Alien movies: all four of the original films in a mash up/remix/reboot/whatever, so that they have a new seemless continuity, maybe with a bit of Alien:Isolation stirred in. And probably with the addition of other all-new subplots and characters as well.
Right now, though, I question if such a streaming series would be too imitative of existing shows like this Halo one, but also The Expanse, Altered Carbon, and maybe a couple of others. (And of course there's the Noah Hawley project that's already underway, but that's a completely different consideration. )
The distinguishing feature of the Alien franchise is the horror element of Giger's monster. Now I wonder if that would be enough.
TC