I will finish this more later.....
It has finally come to light how there is a big issue with being tail heavy!
Not the usual 'It will be hard to control', 'It will be over-sensitive', though they are still true also..... but the 'Stuck in a hover" potential, which will leave a plane with no ability to exit from that!!
I must have been a bit slow to co-relate the data (!!), but via an F-35, F-22 and F-4, all encountering that BIG issue, it finally all makes sense!
If you are tail heavy beyond "Point X" - and that does not mean a "ton", it could be just 10mm more rearwards CofG, or whatever, per a given plane - once the plane pivots into an AoA greater than "Angle Y", it will reach an equilibrium of factors that KEEP it there!
High AoA... like 70deg or more... which then causes huge drag.... needs max power just to stop it falling out of the sky.... has no 'proper' airflow over control surfaces, so they become TOTALLY inefficient and have no authority at all then.
So it is then STUCK in this state, because nothing you have control over can achieve anything - except reducing/cutting power which will make it descend if you do that correctly... or totally stall out and fall out of the sky if you do not!
And I mean it is STUCK there..... it is not going to slowly come out of it... because the equilibrium of all factors is just right to sustain it, and as mentioned there are no controls YOU have to alter that.
A gust of wind might be
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