as far as why there's no micro displacement, superfly is based on Blender's cycles render engine. When poser 11 first came out, cycles didn't have it so superfly couldn't either. Since that time cycles has been updated and it's been added. I think I remember reading the poser team is working on implementing it, but I can't say for sure without scouring the whole site, or at least all the poser forums, and there's no timeline on when they'll get it done.

As for the rest of your questions, I've put aside displacement until they get the micro displacement done because it's almost useless without it.

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