Completely agree. The first two seasons had more of an "unexpected consequences" vibe. I never got the feeling they were trying to lecture me, I just left wondering "Hmm, I wonder how I would react if this was the reality of the world?". I've only watched 3 episodes of S3 so far (1, 2 and 5), but I couldn't help but feel like they were all drawn out and beat the viewer over the head with the message. At one point in E1 a main character literally explains to the viewer what is going on. And E5 was particularly bad. There was a very interesting point to be made on the realities of genetic screening and they just barely touched on it.