Had some extra time yesterday, as well as some motivation, and viola, anybody still playing on SB can now use the built in buddy list. It may not be 100% bug free since I didn't test it alot, but it seems to work fairly well. The buddy list dot commands continue to work as well and your existing buddy list built with those commands is the same list that will show up in the buddy window. Enjoy.
Oh, and for those who would accuse us of trying to compete with PlayMyth.net, well, my todo list is alot older than they are :)