How about having a slider for the microphone on the dialpage below the slider of the speaker for the volume? This could give users the ability to earrape scammers and also confirmation that the call is muted( because sometimes the mute button doesn't work)
I'm in favor. I try to do the same with VoiceMeeter Banana and a horn sound board (http://www.realmofdarkness.net/sb/airhorn/). I don't mind contributing to scammers having a hearing problem.
This could definitely be done, in multiple ways really. My first thought, is that it could be done in the same way the pitch shift feature works (server side), but that would take away the ability to change it after a call starts/in-real time, so I assume it would more desireable to have it implemented in way where it can be done real-time during a call.