Actually, of all possible remakes, I think stuff like Alien Nation is actually right in the sweet spot for a good pick for a remake.
The original was decent, but not amazing. The TV show that followed was relatively short-lived and mostly only shown in syndication. The TV movies were Sci-Fi channel material.
Bottom line: it's not a well-known, classic property, but it's got a solid concept. IF you absolutely have to strip-mine Hollywood's past (and it sure seems like the industry does...) then I'd rather they be taking this stuff than, say, more classic material.