Good news. A new version of Viewer2 will be available in the near future. In addition to fixing the bugs that have been waiting for a fix for a year or so, it will be a significant improvement in performance (namely proper multi-threaded image loading that results in a lot smoother user interface especially when browsing over slow network connections) and also how the user interface works.
For example, there’s a new tag cloud view, a more traditional grid based thumbnail list and an improved version (or, a total rewrite) of the light table view which was the only view available until now (with more physical image groups that can contain other subgroups — in fact you can view a directory tree this way popping open the directories). Overall, it’s pretty sweet.
No estimates when it will be done, except for the infamous “when it’s done.”