The M8 has such a small LED I don't see the point really. I loved the multi coloured LED from my BlackBerry days but this isn't the device to make anything of MS adding support.
Same here. Seems that all HTC specific functions are missing at this time. I never used the duo camera stuff, but need the dot view case functionality.
The notification LED does flash when battery is critically low. I can't even remember if it did this before, but it does now.
The HTC Camera app is wonky. Recording video over 30 fps (which this phone can do on 8.1) is not smooth or just crashes the app (both Windows Camera and HTC) on WM10.