I dont really know the function of uv offsets in the 2d image map node, but is it possible to crop a uv map (and then enlarge) to detail a body part like the hands in order to produce greater detail and compensate for the difference (missing map areas) using uv offsets (or some other setting).
I realize you could remap the obj file, but I want it to be compatable with the standard v4 character.