I would love to see this...maybe a 2 or 3 page or so "flip chart" booklet (spiral bound?) with graphics (which is why I probably won't make one myself...to do it right really needs someone with good graphic arts and documentarian skills).
As an example, and I posted this a while back, look at the Garmin 400/500 series Quick Reference guides. They're WAY too long, and WAY too word, and have a bunch of BS at the beginning that is unnecessary, plus super-basic stuff that borders on "how to push a button" that isn't needed, either, but...
It has a page with a diagram of the page layout/hierarchy, then sequential steps with images for the major functions.
Something like that...*Particularly* for the advanced autopilot functions (e.g., to intercept a localizer, to climb to an altitude on departure via a course, etc.) would be really nice.