Hey! Why don't we re-visit the AOA string on the side of the canopy?
Tick marks for pattern, best L/D, and stall? Bumper, can your Mk IV
Yaw string be adapted for use as a Mk IV AOA String? And put one on
each side as your heads up display for left or right patterns?

In all seriousness, too close to stall is far worse than not perfectly
coordinated. If you combine the two, well you might have a bad day.
Really don't think a new audible warning system for a skid is a good
thing.

Just throwing in another 2 cents worth.
-Steve Leonard