I think there should be a frequently used and normal profile (maybe even multiple and customizable profiles) for the config pages. You would be able add pages to the frequently used profile (via right click). And there could be a checkbox or a listbox for what profile you're using currently. This would reduce the clutter of all the config pages. Also I dont know if foobar is supposed to remember if parents were open or closed, mine doesnt, but I think they should, I would like all the inputs and outputs and dps for example minimized by default because it can be chaotic with so many plugins.
Im sorry if this is in the wrong place.