That's a very good idea.
Instead of a track being called 'chord1', 'chord2' (and same with phrases and pad), if they were given a descriptive name eg strumming, e.piano etc. - it would be very useful for muting and soloing accomp. parts live.

Let's say you decided you want to hear only hi-hats and rythm guitar for a chorus.

You would just mute all the rest (on Yammys I don't thinks you can solo) - you don't have to take a guess at which one is the guitar. They should introduce that on new boards.