For what it's worth: I think that that any law in reference to abortion is inherently a stopgap measure. The only reasonable solution is technological: artificial wombs.

Fundamentally, what should happen is that any woman who doesn't want to have her body used as an incubator for a parasite, for whatever reason, should be allowed to have that fetus removed and placed into an artificial womb in which it could grow to term.

If a fetus does have any sort of legal standing, such a step would protect its hypothetical right to existence, without removing the mother's non-hypothetical right to control of her own person.

I have to disagree. That's not quite good enough either.

Because you're still forcing the woman to become a mother, even if not a parent, if you follow. She may not then have to carry that fetus, but if you force her to allow that fetus to develop and then become a person, you have forced her to reproduce. You have also exposed her to the ever-growing likelihood that this unwanted child will track her down and want a relationship with her someday whether she does or not. There are any number of reasons a woman might not want any of these things happening.

In the end, nothing will do but the right to choose not to have anything to do with it IMO.