Yesterday I was doing a QA on my 27" screen and although it's size normally really suffices, I concluded how much support I'd have from a floating version of the (top left) project segments pane: I could place it on my secondary monitor and see many more errors per QA category.
It would be best when the position of the unfloating project segments pane would be filled with a white area, so that the rest of the GUI wouldn't change when the project segments pane is made floating.
Just another suggestion, no idea if it's possible: make the floating version of the project segments pane contain 4 columns, instead of 2:
Like the pages of a telephone book (remember them?).