We use the "Enhance Dialogue" feature of Apple TV a lot. It is excellent at removing the annoying background "music" that most TV editors seem to think is mandatory.
While using channels though, to switch it on or off is a pain. I have to exit channels (so loosing any live buffer) go into Apple TV settings and navigate deep down to the correct area. Even with a macro to do it, it takes a while, and if Apple changes the menu structure slightly (which has happened) the macro does something completely unintended.
While using the Channel 4 app for catch up today, I noticed that above their timeline there is an audio options button that give access to the enhance dialogue menu directly. see pics below.
Would it be possible for Channels to do the same somehow? Maybe in the options drop down window where the other audio options are?

