I think people will use what ever figure they feel best suits their need. Not everyone wants to use Genesis no matter how good it bends or what it can turn into. V4 could morph into several characters, and yes, scaling was an issue. Using Genesis won't make it any less of one. That sounds like a software issue, as was the animatable joints and subdivision. Content is a third party issue.

 

I think it's been said rather plainly. The vendors could do it if they want to. They just don't want to because they don't think it's worth the effort.