Once again Toyguru is caught in double talk.
The real reason he won't push a second head with rooted hair is because it would make the POP figures more expensive for HIM, which would probably decrease whatever bonus he gets for bringing each figure release in under budget.
I have no idea if that is how Mattel works, but considering how cautious he seems about the cost of each figure, I would bet that the budget is a huge part of why the female figures are getting the shaft (Evil Lyn without any fancy changes, a la Mer-Man; the neck pegs; no rooted-hair heads)
anyway, I just think it's not going to happen because it will decrease the profit on the females and that would probably decrease TG's income as Brand manager.
Otherwise, TG, why would you say you'd have to change vendors, but you have changed vendors for this line, and others, before.