Initially I though I would never use the touch-screen, but it is actually quite useful when reading things (scrolling) or quickly clicking basic things when not really sitting behind the keyboard on a desk. Same for the light in the keyboard, very useful when working at night and on airplanes etc. The screen in general is really really good, some colleagues have the 1920x1080 screen, I would pick the 3200x1800 screen again next time since it's much nicer to read from and allows you to use smaller fonts (= more code on one screen)
Linux support is generally much better than other relatively new notebooks I've had, but still sometimes things break. The Developer Edition is released a bit later than the Windows models, probably to stabilize Linux support. I've only used it with Ubuntu, but I see others use several other distros which seems to work without much issues.