I don’t get the negativity. I’m glad they launched the 928 on Verizon because my current carrier (US Cellular) has no good WP option, and the ATT coverage absolutely sucks. Now i have access to a great phone (imo), on a network with good 4g coverage.
The beauty of the U.I. took a step backwards when they removed the side arrow and margins. Removing the space at the top would make it worse. You wouldn’t cover every inch of the page in a book with text, these spaces served/serve a similar design function.