I second this request: I would like more flexibility in the arrangement of panels, and the ability to dock the color editor or the brush editor (or make it an auto-collapsible popup)
To me the color editor as it is now does not make much sense, especially with the swatches below it. I would rather have just a simply color picker, and a swatches panel, not combine them. The same goed for the brush editor. I need an editor and the brush list separated, it does not make much sense now, especially as I cannot hide or move the brushes/color panel on the right.
Please consider adding draggable menus to allow more personal customization.
(by the way: the UI issues I reported before are still present, and fix for this?)