Yeah, I was thinking something more along the lines of this... FYI, I use 2 monitors so my "palettes" sit on the 2nd screen. This is probably why I kinda forgot about Page Notes since the frequently used palettes (Widgets and Annotations & Interactions) sit right next to the work area.

BTW, a couple things regarding the disattached palettes... First, when Alt-tabbing they show up as separate items in the applications selection box--pretty annoying to suddenly discover that you now have to tab through at least 5 more items to switch to your desired application. Second, the Page Notes palette retains the "bottom of the page" shape, but should probably look like the others when not attached--it could toggle back and forth.