I haven't read this thread since the new episode last night but I am mildly disappointed thatHank twigging on to Walt being Heisenberg came to a head so quickly. I'd have liked to see Hank's suspicions and the unspoken unease between the two explored a bit more. Instead Hank finds out and punches Walt. Although of course it's set up intriguingly going forward, I felt there might have been more room to draw that situation out more.
Gilligan said there initial plan was to have it play out a bit and have Walt find out about midway through the season, but he said they have so much stuff left to tell that they had no option but to blow it out the water early on.