A bunch of states ought to get split into multiple because it would result in a better mapping of state governments to economic and cultural lines and result in better representation for all parties on the state level.
Of course it will never happen for a multitude of reasons
IMO, remove the cap on the house of representatives and go back to the original method in the constitution (1/30k).
And then if you and ~30k other citizens all agree to sign for a specific representative then they're in the house but you can't vote for a different guy in the normal election.
You'd generally have to have the urban areas be one state, and everything else another. But those areas still have large numbers of people aligned with the other party, so those people will be even more disenfranchised.
And if a county "flips" parties in one election, do you then move it between state lines?
Of course it will never happen for a multitude of reasons