Something that wold be extremely helpful (at least to me) n this area would be another choice in the note coloring option. Normally I leave this set to highlight out-of-range notes. But I’d love to have the ability to switch this to a “dissonance scale” (somebody could probably come up with a better name.)
For example, notes that are explicitly in the chord wold display in black. (e.g. if the chord is C 7 b9, then C, E, G, Bb and Db would all be black.) Notes that aren’t in the chord, but reasonably belong to the scale defined by the chord would be shown in yellow. In this case, D, F, and A would be yellow, indicating they are highly compatible with the chord. All other notes would be red, indicating they are dissonances. Red notes aren’t bad. It all depends on the context. But visually, I’d expect red notes as passing tones. I wouldn’t expect many red notes near the end of cadences.
I just finished a 5-horn arrangement of Nutville that would probably be 30% red in the horn parts. But if I saw much red in a ballad that would likely indicate either an error in the parts or an insufficient chord name.