I know it's too late to do this now, but a true federalism would relieve a lot of this polarization we have right now.
What if you paid 20% income tax to your state, and only 5% to the feds, instead of the opposite way around? Then each state could decide whether they want high or low taxes, heavy or light regulations, and then citizens could vote with the feet. But instead we give all our $$$ to DC, and they decide whether we'll get any of it back. Too many functions happening far off in DC, instead of in our state capitals.