I've got a quick question that is most likely answered earlier.  Is there any way to use overlay maps?  For example, there is a V4 Age injector that uses overlays in the texture portion that adds age spots and the like to a V4.  One could also use tattoos, etc. 

 

If not, is there any plan on adding that capability?  I hate to bring up the other plugin for Daz, but it now does support this.  I am thinking it may be a while yet, as it may be a part of the material editor you have planned.