While all the stuff on the planet is fairly entertaining stuff, it's typical Stargate. Even if the end leaves them trapped on a planet, we've already seen how simply and unambitiously SGU tends to solve interesting problems.
The main focus is Rush (Robert Carlyle) getting a chance to act more than his usual moody and shifty, with a trace of conscience.
While what he is doing helps drive the plot on somewhat, it gives us some idea why he's the way he is and actually allows you to feel some sympathy towards him. Whether this is used in part to begin to turn him around and make him more than the show's 'Doctor Zachary Smith' is yet to be seen.