Exactly, because this isn't an NT map it's in OF [Old, or Original Format aka non-NT] as i pointed out so it's possible to extract the POIs:
but as you say extracting the PIOs or even combining several smaller tiles into one, would overcome the problem of this: when you add a topo on top of those 3249 tiles plus the basemap it'd be real easy to bust the 4,000 limit. And there's the rub of course, this isn't an NT map it's in OF so maybe someone could do that .....
Admittedly could have worded it less confusingly.
'maybe someone could do that .....' = 'Sounds like a job for someone Stateside to do. Hint, hint'. You'll have many more fans when you finish it Mate!