My solution is to stop the crime and make the cities safe again. No open air drug markets, no humans shitting on the street, no free shoplifting under $900. Chicago adopt d the “no bail” policy and the prosecutors like Kim fox are soft on crime.
This is an OBVIOUS first step.
Tax policy is up to the cities. But the have to be competitive with other cities or the willl lose out. Some cities, especially in CA, need to look at their tax policy, yes. %50 of your income is ridiculous. When the income tax first started it was levied at around 5%.