USB-C OTG, IR, 64 GB + micro SD (good to have plenty of space for multiple OSes), compass, quad band.

Unlocked bootloader and multiple OS options planned including Sailfish (if possible).

As promised, count me in for two devices already I think (well, we'll see the price, but that's my plan). 5.5" will make one-hand gestures absolutely impossible though, and I have to purchase new jeans with bigger pockets.