I'd really like it and I'm sure others would too, if the playerlist sections (Staff, Buddies, Guild, Normal, Ignore, Offline) had an expand and collapse option. The arrow suggests it can, and if you can by all means feel free to let me know how (

) but I don't think it has any function to it.
Some people have a lot of buddies, or dislike looking at a massive list of useless staff on tag, etc etc, so I think it'd be a pretty useful small addition.