We can rate album with 5 stars (rating) but only the Favourite and Banned for tracks.
I use Itunes for several years and really like the stars rating because it give more flexibility when we create smart playlist. (Bookmark in Roon).
I really like ROON and i’m a new Lifetime subscriber and I was surprise we cannot rate tracks with a 5 stars (rating).
I would take a look here:
(Although it is a little depressing no note that the linked thread was started in 2015, and not one word from Roon on the topic. I would have thought that in four and a half years they could perhaps find the time mention something?)