You know, we might just see it in our lifetime.

It's decades away, assuming the stuff that's in the pipeline works and can be applied for trans people.

It will take some serious work though. The uterus is kinda the easy part, in that they've technically been transplantable hypothetically for a while now, and there's space for them to go

It's all the other "stuff" that's difficult. Not gonna go into detail, even behind a spoiler, because discussion of it has caused pain to people I know irl, and I'm not risking that here. But, assuming transition ahead of transplantation of all the organs and structures needed to give vaginal birth goes well, that transplantation is "just" modification of existing surgeries in use for cis women.

I think we'd see caesarians first, which would be incredible in and of itself.

I doubt it'll ever reach 100% success, what with the difficulties of transplantation in the first place, but it should eventually be an option that's no more or less medically an issue than what people currently go through.