Artist Overview pages need shortcuts to different release types, e.g. album, single, live, ...

e.g. http://test.musicbrainz.org/artist/72c536dc-7137-4477-a521-567eeb840fa8 has 8 pages of release groups. Only Album and Single are on the first page; one has to tediously scroll through the 7 other pages to find the other release types.

Same holds for VA release groups.