Alright guys, beta 11 is finally out. Playlists now have custom sorting options out the wazoo, for top lists and such. This will now allow you to change the way things are sorted in Big Box as well, if only for playlists.
Also new for this release is populating the arcade playlists. There's an option to create them on MAME imports, as well as do it for existing collections from the Tools menu (Create Missing Arcade/MAME Playlists). This was requested quite a bit, so I just went ahead and built an automatic method in for existing collection as well.
I still have not been able to fix the lousy sidebar sorting bugs, so that is next on my plate. I need to go back and review, but I believe most everything new is done for this release, so I'll be focusing on bugs going forward. Thanks all, let me know how testing goes.