So the question remains, still: how does one achieve vascularity with Superfly since the 'traditional' Poser Firefly displacement does not work. We'd need new maps, new scripts...Hence my question if perhaps a vendor would be willing to figure this out for sellable products?

It totally is baffling to me still why there are all sorts of easily applicable solutions for scars, tattoos, freckles, moles and vascularity in DAZ, while new versions of Poser are completely void of this (there were excellent products for older versions of Poser for it). Is there so little  interest in this type of realism? Or those who0 are interested are so well-versed in the Material Room that they are just producing it for themselves and end-users like me are left wanting, asking here and slowly piecing it together, stumbling and failing?

I don't wish to move over to the other software, but this makes me somewhat sad.