I was reading between the lines on the fact that the scenarios the listed involved high speeds (which generally need nose down trim) and an aft centre of gravit

I was reading between the lines on the fact that the scenarios the listed involved high speeds (which generally need nose down trim) and an aft centre of gravity which also needs nose down trim. Further, the section on EUSA's position clarifies that they wanted to improve the margin of safety on an out of trim dive, this is where 3 seconds of nose down trim (incidentally, that's how long they expect it to take for a mediocre pilot to identify a trim runaway) are applied without pilot intervention and the pilot has to demonstrate controllability. But that point is pretty moot because the electronic trim cannot drive the jackscrew to the extremes that the manual trim wheel can, but it can return from the extremes to the centre. MCAS is driving trim to the nose-down extreme and the pilot is trying to return it to neutral.