NiranV has made a couple of recent releases of the Black Dragon Viewer, now at version 126.96.36.199. Version 2.4.4 the previous version has a long list of fixes.
The big addition is for Viewer Managed Marketplace (VMM). Or maybe the more important change is fixes to the RLV section of the viewer. Whichever is more important to you, the viewer is better.
VMM is coming to all the viewers. When your favorite viewer gets the feature is not all that important. The only think you cannot do without a VMM compatible viewer is add items to the marketplace. All other tasks can be handled through the marketplace web site.