I want to know what phone you are coming from that it's that big a deal. It's excellent and still probably the best display or at least one of the best overall in a phone, but the OLEDs in the Galaxy S series and other phones are pretty nice, too. You get used to it after a while.
The speakers still manage to impress me, though, every time I try using other phones. It's just really nice being able to use the phone without a dock and still being able to hear music, podcasts, or lectures across the room fairly clearly and with decent quality.
Love using my One as a remote, too. Better than the Logitech Harmony I had a year ago. And I think the Media Link HD (wireless streamer) is the best implementation of Miracast, and one that very few people have heard of apparently. I think Samsung has a similar option but of course it only works between their own devices (no way would I buy a Samsung TV just to work with a phone). Media Link HD is worth the difference over a Roku or Chromecast, in my opinion, and if you preordered the HTC One you got it for free.