Aside from anything else you might like or dislike about the setting, it seems to me worth encouraging the development of a fully supported science-fiction campaign setting. I think it's wonderful that you can download supplemental rules for a couple of bucks, and that people can make money selling you just the rules you want, and not a hundred or so pages of padding to go with it, which was kind of the model with a lot of the old style of RPG support. But the thing that bothers me, which I've ranted about in another thread, is that you don't seem to get modules anymore. A big selling point of Dawning Star for me is that they're not planning to leave you high and dry when you've used up the little quick start adventure that comes with the campaign setting. There's a big fat module coming out in November. That's exciting to me. I would probably prefer a number of individual modules sold piecemeal, but what the hell? One book to take your party all the way to 20th level.
Settings must come with modules. They take a lot of work off of the GM, who already has a lot on his plate to make the magic happen. Furthermore, modules become the stuff of old war stories. Gamers sit around and compare what their parties did in The Salt Marsh Trilogy or the Crash on Volturnus. They become part of a shared culture, a common vocabulary.
So for my money, module support alone is a reason to look into Dawning Star.