One solution to all this discontinuity is fundamentally anti-American.
National standardization of CFI training and pilot performance standards.
We are talking way beyond FARs.
Take France as an example.
All CFIGs are recertified in central locations by a national staff.
That way the training, training requirements,and performance standards are the same throughout the whole country.
The good part is that it dramatically reduces the unpredictability of what a pilot is going to face during flight reviews and local field check-outs.