BuxXToMaster is a great way to send groups of processed audio to the Master quickly and efficiently for streaming and recording.

Activators are handy for quickly verifying that mission critical button presses on external surfaces went through, as well as providing the state of important elements at a quick glance.

There are activators for when inputs are sent to the Master, as well as other buses, and activators for when buses are muted/unmuted, but nothing for when buses are sent to the Master.

One could, instead, keep a bus sent to Master & mute/unmute the bus itself, using the activator for that to keep an eye on the status, but that's not practical in certain situations, such as when you're using a bus for vMix Call, with the built-in Mix-Minus functionality, and don't want to (or don't have the available bus to) separate your talkback channel from your stream channel.

Also, some AI based plugins benefit from having extended access to audio prior to going live. When buses are muted, audio sent to them isn't processed, which is another potential pitfall of muting a bus entirely rather than toggling the "Send to Master".

As I see it, the ability to send a bus, rather than just inputs, to the Master was added for a good reason.

Activators were added for a good reason.

An activator for a bus being sent to Master would seem to be supported by those same reasons.

YES!
+1

+1