"Personally I find I spend a lot of time flipping through those ten inspector panes and I wish I could bring up two panes at once"

FYI - You can open more than one inspector window at the same time. While an inspector window is open, hold down the the Option key and click on, say, the Table, Slide, or Build button. A second inspector window will open.... do it over & over for a third, fourth, fifth, etc.