I would love to be able to select a particular genre and also de-select one or more at the same time. For example, if I choose “Smooth Jazz” as a genre to play, Roon will likely play “Dave Koz’s Christmas Album.” However, I have no interest in listening to Christmas music 11 months out of the year. So why not be able to select, within genres, SMOOTH JAZZ-HOLIDAY-KIDS+SHOWTUNES?
That doesn’t seem to be that hard to do - but, what do I know?