The in-game playerlist is not
that bad when it's external, but its still very crappy in the version I have (right click doesn't work; middle click does?), hovering mouse over doesn't work unless you click inside, moving your mouse outside always brings up the tool tip, names don't refresh unless you put your mouse over it. However, I was told Stefan fixed these in the next version
Would also be nice if it could dock like on the Windows external playerlist.
The reason there are so few Mac users is because the current client sucks on Intel Macs, which almost every Mac user has. The new client will help a lot, assuming CJ can get the publicity/advertising.
The reason for so few Linux users is because virtually no gamers play Linux