Well, I liked Carth. He seemed more real than the others. He was someone you could trust not to betray you. I know a lot of people who whine more than Carth and I hardly notice the whine. He ruled with dex items, dex implants, best exoskeleton and two good guns. he was the character I used the most (because Bastila disapeared after the leviathan).
I hope that soldiers and guardians have more skill options in kotor II. Carth would have been the best with repair or security.