I would like to see a mute button added that will mute the return audio feed so that if a vMix caller needs to silence return audio they can do so without having to turn off their speakers. For example, its possible to watch a YouTube video and turn off the audio. I know you can "Mute this site" in Chrome by right clicking the tab label but the fewer things you have to explain to a caller, the better their experience and the less headache for everyone. So a speaker icon with and on and off would be helpful.