Underfire, that is a silly idea. First, it would cost a bomb, and second, you'd probably end up pranging a good number of aeroplanes. That is exactly why Sims were invented. The problem here is not the difference between Sim and aeroplane, it's that the Sims are not being used properly.
Certainly agree, as I stated, it would be interesting. On the validation flights, the check pilots, many of them the respected airlines chief, were surprised with the ac performance with these validations activities, such going EO anywhere close to the DA. Even calling for a GA at the DA and not busting the 50 foot momentary descent.
As noted in the posts, why there many comments from pilots on this forum referencing ac certification performance is the issue. Certification performance has nothing to do with actual performance.