It's...not the worst.
Economy is ass, some of the mechanics (spaceship combat, for one) are sorta broken or nonsensical, and a few of the classes are similar enough that they could have been made into subclasses or done as alternate class features.
But the setting has its merits, and the Alien Archives are all pretty awesome for inspiration.
A little tinkering and homebrew here and there and my roommates and I have put together a pretty fun little campaign over the last year. We started with the Dead Suns module and have kind of turned it into a more freeform space cowboy detective series.
Also the minis are currently entirely too expensive for how little selection they have. Dunno what paizo was smoking when they released a 4 mini box for 35 bucks