Thanks for trying to slip some useful content into this thread past the trolls. I may yet learn something.

Blender has its adaptive subdivision https://artisticrender.com/how-to-use-adaptive-subdivision-surface-in-blender/ which seems like a reasonably efficient way to achieve the same ends (even though it is something different from actual micro displacement). If that's already supported in Blender and Cycles, it seems like it's something that could appear in Poser too, as Cycles in Poser gets updated to a newer version. I can get around the lack of micro displacement by simply subdividing many, many times (and I have done so on some occasions), but that obviously also has a cost in render times too. Adaptive subdivision would reduce the need to do so.

It's a little unclear to me whether Blender also has micro displacement. In my random Googling, I can't tell whether it actually does or people just don't know the difference between that and adaptive subdivision.