I use Rollup all the time, but prefer the right-click method, so no button needed for that.An Always OnTop button is very handy.A button that opens my text editor would be cool.There's really no other button, I've needed/wanted.
right-click roll-uplock-on-topnotepadwinamp controlsscreen savercalculatorquick launch (smarty button)Green Reaper's transparency plugin
and whatever else you want to add...