Yes, I can add the ability to control the brightness using the keys on the keyboard, however the spots where the jumper wires will need to be soldered to are very small, so it may be difficult unless you have precision equipment.@dosdude1 - Do you expect there will ever be a way to control backlight from the backlight keys themselves, or unlikely?
Possible to get a diagram of the jumper wire spots? Is there a recommended wire gauge?
I will make a diagram for soldering the necessary jumper for controlling with the battery status button.