I've been experimenting with FBX figure import using a free, low-ish poly model (DA) that sorta 'played nice' with my PoserPro11.

https://www.deviantart.com/gs-mantis/art/Miku-Lite-Model-Download-480790573

Took a while before I found an FBX import scale that neither needed a microscope nor stood taller than the sky-dome. In this case, x2500 scaled to 'adolescent', while x3000 matched LaFemme. (Default is x100 ) See pic below.

I've yet to find suitable scaling factors for many other FBX models as I cannot locate them in work-space after loading ...

Would it be too much to ask for a 'size to % figure height' import option per OBJ, and report scale found ? Or is there an easy way to peek within an FBX and estimate scaling required ??

I'd certainly like reliable scaling and posing of FBX models within Poser, as doing either beyond a very few percent or degrees often makes them 'explode'. Shades of P3/P4...

Importing FBX is final stage of 'MMD PMD+PMX ===> Poser' pipeline, but would support eg XNA meshes, too.