State governments are supposed to be a counterbalance to federal power. As of now, they have no power against the feds, as no legislators are chosen by state governments.
It is not a question of ‘better’ or less corruption. It’s just a question of whether state governments get a say in the central government.
That makes sense if the goal is for the Senators to represent their home state instead of the people of their state (which the representatives are supposed to do anyway.)