HS allows you to change the settings but only after the phone call has started which is very silly. If you are using headphones that are set to stereo in the default system settings you can not hear anything during phone calls. You then have to change mid-call and by that time the client may have already picked up the phone.
There needs to be complete flexibility and customisation about which Mic and Speakers we’re going to use during phone calls… BEFORE placing the call.