It's quite possible to fly pitch attitude with reference to the airspeed
indicator but that's a instrument rated pilot *"partial panel" trick and
most pilots either aren't trained to do it or aren't good at it.

An AOA indicator solves the problem nicely.

Only if pilots are trained to use it. Why not just train them to use
what they already have? The airspeed indicator can be very useful.

If the AOA indicator had a stall warning that might help.

You know, if you think about it, we already have an AOA indicator.
It's called "the aircraft"!

Maybe the problem is the lack of awarenss of the degradation of mental
attention under stress, so called "overload".

Matt