I have been popooing angle of attack instruments as being unnecessary, until I used one in a friends airplane.
Now I'm a convert. I just installed the one AS sells, pressure type, no electronics.
Apparently it is not an AOA but a lift reserve indicator. Whatever, it works.
Really it is just a hyper sensitive airspeed for low speed.
Mount it up on the dash and keep an eye on it over the nose and I can see where it is a life saver and a short field enhancer.

IMHO

Ray