More UI Suggestions, on the first page of adding a release add a checkbox to indicate Classical, then if this is checked by editor there should be a different UI that makes it nice and easy to add Conductors and performers for each track, link each recordings to works ecetera. Maybe hide Track Artist and make it completed automatically when add Composer (if we are sticking with Composer as Track Artist)
Just because conductors are added to the database via relationships they don’t have to be displayed to the editor in that way, if its important information it should be obvious how to enter it. A good User Interface should not require editors to need to look at the guidelines for the majority of cases.
I dont’ think most new editors would appreciate the mentoring idea, they would find it annoying.