it'll take a couple of election cycles to work itself out.
at the very least, if roe/casey is overturned, more states laws will reflect the preference of the voters in those states. blue states will continue to allow abortion on demand, and a lot of red states will not allow abortion at all. the purple states (or the purple-ish states like texas and florida) will be interesting to see where they go.
i dont think a national abortion ban will happen. there will be lots of talk about it, but it would be very unpopular.