What do you see as the problem? Disproportional representation? Unless you split up the metropolitan areas, you're still going to have states with a very highly concentrated population. Splitting up large cities into different states sounds like a pretty bad idea.
I think the actual problem today with government is a lack of representation. Combined with increased power at the federal level, I suspect this contributes greatly to people not voting. Why vote if it doesn't matter?
Disproportional representation is almost impossible to get rid of without constitutional changes, I'm not ready to go there yet. Some of it could be mitigated.
The house could be partially solved with a massive increase in the number representatives. Though I'd be interested in exploring proportional voting, say 5-10 representatives per district with voting power based on the percentage of votes they get.
The power of the federal government is a ship that has long since sailed and states rights are badly tainted by the issue of racism. I don't see a way back. So more Representatives! There would be no constitutional issue. It would greatly reduce the power of any one representative. It would greatly reduce the power of money on that side of the equation.
The Senate is working as designed as far as I can see. If the left doesn't like it, break up California and New York. The right could respond by breaking up Texas. New states would be fun.