it could have been addressed at least as soon as p6 came out.  and  hasn't been.  it might be the fault of texture makers, but i doubt it will change.  and since daz made the decision to do it this way, saying the solution was masked eyebrow materials/shaders could work just as well, then they should actually demonstrate the method and not sell textures with embedded eyebrows.    i honestly prefer the masking method, and wish that all makeup, tattoos and body hairs in textures were done this way, but also would prefer proper skin shaders and different material or shader enhanced textures.  that's just not what merchants do, and saying they should but then doing the opposite is just not effective.