"...and what about animatable joint centres? I heard that would make scaling easier to make teens etc?" Yes, it does. This is Michael 6 after 10 minutes of dial spinning. No custom morphs, no "fixes", no scaling, no nothing. Good luck trying this with any less advanced figure. Yes, one can do this. At least with the older DAZ figures. But it is a lot of work to get a halfway realistic result. And it'll brake content. As I said, this was just 10 minutes and all clothing still works.