It was something I suggested a few pages back as a compromise.
1 track per author in botw. If a user has other tracks that qualify for botw, they won't be listed outright. Instead, a little icon will appear in the row on the list, indicating the author has more than one track that qualifies for botw. Mouse-over this icon (or the row?) and a little list will be displayed that links the users other tracks, much like the screenshot thumbnail mouse-over feature.