Because of my massive collection of music, the "splitartist" keyword wasn't enough to make the tree sorting effective, so I made a small patch to enable the "firstartist" keyword. (Difference: Instead of "A B C D E" as a branch, one gets different branches for each first letter of an artist.) I'm not sure if I should send this to some mailing list or to Jarod Wilson or to Isaac Richards or somewhere else, but I thought this would be a start.
Created attachment 69954 [details, diff] firstartist keyword support Makes it easier for people with lots of artist and a remote
This patch would be better submitted upstream at http://svn.mythtv.org