Crown and midscalp is what prevents a good hair transplant result mainly. When I look at MtF with baldness their diffuse almost always resolves but the hairline doesnt go back to NW1 it usually goes back to NW3 or NW2. But their crowns look immaculate after years of HRT, the same cant be said for the front. And when that happens usually the donor improves and you can get NW1 or even a feminine hairline(which not all women have) if the donor is good enough with surgery. Even if you say reach NW4 but your crown and midscalp is intact and donor is intact you can have 3/4 FUEs or 1/2 FUTs and you can go back to NW2 or NW1.5 even. Crown is what ruins everything since the amount if grafts you need for it is insane, you basically need to spend your whole donor for it, but then you have nothing for the front which matters more.
But I agree it is better to Have intact NW1 and baldness at the back because you can buzz your hair and still have framing while being creepmined no matter how your face looks, but if you have NW4 and intact crown if it is not clean shaven the baldness is obvious and you are dadmaxxed if you look masculine and creepmaxxed if you look feminine.