This is admittedly the most minor request of the decade, but here it is:
When you click a note, Dorico displays the note name in the lower left (D#4, for example). If, however, you happen to touch the end of a slar along with the note, Dorico says “Multiple selection” even though only one note is selected.
That is minor, but carefully deselecting slurs many times a day does slow down workflow.
I can read music, of course, but when working on parts in several staves with different clefs and transpositions, the note ID does prevent errors.