Quote - the process required to make content for V5 (model around neuter shape).

Actually, that's not true - you can model around any morph, then use the Transfer Utility to convert it into a rigged figure while reversing out the morph. You would probably need to tidy the resulting mesh up, unless you were sure it was never going to be used on another morph (and one draw back is that most of the female shapes so far are starting from scratch, not modifying the basic female morph, so that isn't always going to be a safe assumption) and you would reuse the original model as the morph for that, since it would inevitably be better than than the auto-generated morph.