We have large Yarg parties with 8+ players, and it would be so helpful to indicate which profile corresponds to the vocal fill meters, and to a lesser extent, the note highways. Also add which color corresponds to that profile's vocal part. Perhaps this could pop-up during the few seconds before the song starts.
#Show vocal/instrument profiles before song starts
sonic oasis
fallow rain
Thats planned. We even did a first version looong time ago but never finished the PR, its going to be added in a future update