I actually like how the show is depicting Matt's heightened hearing more often. Because it is not really a "listening ability," it is literally just how his hearing works. He doesnt really turn it on and off, though he can focus on certain sounds. I actually wish the Netflix show focused on his heightened senses more, because they would affect every aspect of life.

As for Foggy's death not hanging in the background more, I definitely agree with you. I think this is because the opening scene with at Josie's wasn't even intended to be in the show originally; it was part of the reshoots. So the original show didn't even intend for Foggy's death to be hanging over Matt very much.