I always set the killswitches on my librem5 in the following way: modem=on, wlan/bluetooth=on and camera/microphone=off. When I get a phone call I must not forget to turn on camera/microphone before answering. And after the phone call I must not forget to turn off camera/microphone again.
But sometimes I also forget this. So I would love to get a big warning immediatelly, if a call arrives and camera/microphone is off, to turn it on.
And also if the call has ended, and at the time when the call came in the camera/microphone was off, I would also like to get a big warning, that I have to turn camera/microphone off again.