The likely outcome of the current Supreme Court abortion cases is that the right to abortion will be eliminated at the federal level and it will be left to the states to decide whether or to what extent that right exists in their jurisdictions.
I think having different rights in different states is absolutely and unequivocally nuts.
How about freedom of speech? How about freedom of religion? How about equality under the law across races? How about gun ownership? How about privacy? How about jury trials? . . . .
We can always use the amendment process to add, subtract or modify constitutional rights. But if it's a right, it should be equally a right everywhere in the US.
Depends your definition of a right.
Also; what to do with edge cases.
Abortion is much more complicated than any rights scenario I can think of. You have to take into account the relationship between the fetus (whose value ascends over time) with the outside actor.