I never finished SGU back when I first got access to it. I've finished both SG-1 and Atlantis countless times. I remember watching most of the SGU pilot episode and quitting. I thought it was being too overly edgy and grimdark, trying to follow in the footsteps of the Battlestar Galactica reboot. I couldn't stand the idea of a Stargate show that was just characters being awful to each other.
Recently I tried giving it another shot and made it through the pilot episode. The characters are still abrasive to each other, but much less than I remembered, and they seem to for the most part mellow out a bit with each other as the episodes progress. I just finished the forth episode and I do want to continue. I am hoping they start actually doing something more than "the ship is falling apart we need to do something to fix it" plots, but I suppose the show really is trying to plant the setting.
The series is almost entirely centered around interpersonal drama. As it progresses, they solve many problems, but still continue to come up with new sources of drama.