I just posed that same question to someone the other day. My Goddess personally has a split neck and the head cannot be re-attached. So I'm probably bias on this one.
But with all the problems with that figure in particular I find myself asking if Mattel even touched one of these figures before they gave the mass produce a go ahead.
On another related note...is it the translucent plastic that has caused them to be so brittle in the joints, especially the neck area?