That sounds like teh suxxor. However, my slave wow's only have jamba installed, no other addons needed at this point, so it's not a big deal for me to manually install one addon to each of the slaves' folders.

Maybe I'll symlink the interface folder too though and just configure the toons on the slave accounts to only have jamba enabled...I have enough other bits of the wow folder symlinked just to fit 3 wow's on my 32gb SSD...