The major fly in the ointment here is that in vast majority, Republicans have no balls, will not stand firm on principle, and are supremely concerned about offending people.
So, while it’s a nice thought, I don’t think anything meaningful will actually happen. Sort of like a lot of SAFE act...
If all the red states had the balls to do this, I think the federal overreach we are used to seeing would be cut down a little bit. People tend to forget “a sovereign nation of many sovereign states” is the way it was supposed to be.