Apart for our personal preference, which I bluntly stated
, consider we're talking about a 10+ years old model that is not up to current technology/standards.
This would lengthen a project time 2 to 4 times (so it would take at least twice the time, likely much, much more per project to support her) and this would, perhaps, add a 5% sales?
In this case, if you want to support V4 yourself, modelling and texturing will not be the biggest issue, you will have to spend weeks/months to make stuff work on her. By the way, are we talking Poser or Daz Studio here?
Just for reference, The Legend was originally modeled on V4, when we realized what it would take to make it work on her in Poser, we surrendered and put it in a drawer waiting for the tech to advance
.