Brightness and Volume should be draggable. It's pretty hard to hit brightness of one or a volume of one. Wish it was like Advanced-Power/Backlight
Flight mode should turn off WiFi and Bluetooth (and possibly GPS). I don't know if it's just mine or something, but when I turn on flight mode it just makes it so I am not connected to wifi and bluetooth is 'off', but the modules are still in memory.
The volume mute button is very, very difficult to press. You should also have it so that until you unmute it, you can't move the audio bar, because when I'm trying to hit mute, i might hit it once and then one more time, and I missed, so it unmutes it since it's so easy to hit the volume bar.
Perhaps the WiFi box should show the network you are connected to. Having the... UUID... looking thing isn't very useful at all.
You should also somehow put at the end of an install/update that you should issue a command to restart asui, if it doesn't already.