Wow this is an extremely useful post.
I had no idea that the HTC button was actually an active button with functionality crippled by Sense 5.0.
I also had no idea that one could achieve using swipes to turn on/off the phone. HTC's biggest hardware flaw tends to be the physical buttons, so this is a huge relief. You're making me consider the One instead of the S4 I have now (I could also really use the speakers since I use my phones as speakerphones a lot). If only the One had a barometer...
How hard was it to do all the modding? And which aspects of Sense (what functions) do you miss most?