The overall consensus, I sense, is that there wasn't enough in the pilot to see where it is going (short Hoffman screen time), but there was more than enough to generate the want to see more and see what Milch is going to give us. As with any worthwhile, absorbing and character driven storylines, it has to slow burn before the viewer can 'feel' the inside of what is happening.
I get the impression that Michael Mann receives praise across the board for clear leadership and direction in the overall colour pallet, look and style - so can't wait to see it!
I will cut to the chase. Here is a selection of media reviews for you to consume:
Wall Street Journal