Luc,

Have you looked at the AOA indicators that are currently used in the GA fleet (mostly experimental aircraft)? There is a "standar" (sort of) depiction of the Aoa that you might want to follow.

https://www.aircraftspruce.com/menus...ndicators.html

Most of these use similar patterns to indicate approaching the stall. The center blue dot could be the optimal glide angle for a glider. Many of these systems also have an aural component that aggressively announces "PUSH" if you don't respond to less insistent prompts.

I'm not sure we need multiple ways to demonstrate the same phenomenon.

Mike