Let the backlight and other keyboard-controlled functions stick between uses, reboots, etc. For a keyboard this expensive it seems foolish to have to reset the computer backlighting every time it's turned on, rebooted, etc. I've notice some change to this function for the good, but it goes back to a default (something like level 3 backlight) when I want it to be level 1 all the time. Or add it to the software presets.
And while I'm here, why aren't you adding the most expensive peripherals FIRST to the new Logi+ software. My MX 2 is still not supported but I saw today some inexpensive 600 series mouse was added. Why? Not a good feeling Logitech. And one last thing, why the odd migration to a new software piece done like this? Just migrate then push the version! This is so cumbersome and makes Logitech look poorly managed.