I would also highly suggest much in the way of optimization comments or "callouts". One big example is people who dump 500 Dundjinni images(default to 200px per inch) into maptool and wonder why their maps take forever for the clients to receive and load. Ditto with the drawing tools. Ditto with the VBL tools, re: circle tool vs X's for columns, trees, etc...
I say "callouts" as they generally bring quick attention to something by being visually prominent.
I was thinking the same way. I'd say Box or Sidebar instead of Callout but I think we mean the same thing. Headings could be "Optimization: Smart VBL" or "Optimization: Just Enough Image." That way the reader would get used to seeing, remembering and applying the contents of those boxes.