I use multiple bluetooth devices like keyboard, mouse and headphones and sometimes I’d like to know the current power level of these devices. I have a second system with XFCE and their bluetooth manager has status information like connectivity or power level:
Think this is certainly an area in need for an enterprising dev to investigate further. Possibly update the existing upstream budgie bluetooth applet. Bluetooth stuff isn’t really my area so I’m not familiar as to what the various bluetooth options are in the ubuntu repository software suite