I wouldn't mind the state getting 10% too. It could piggy back on the fed sales tax. Giving the state 10% would put it on an equal footing with the feds. That was the intention of the Founders. The states will need to take care of the tasks the overfunded feds have unconstitutionally usurped.
I would even be willing to give the county 10% if they would give up all other taxes.
Imagine no more excise taxes or property taxes. Only a sales tax at the register.
I wouldn't give one red cent to the cities. I don't like cities in their current form. I believe they are a cancer on the American way of life. They breed almost all the things I dislike about this country. Welfare. HUD. Crime. Congestion. Smog. Etc. Etc. Etc. Many of societies ills. I know we would still have all of these without cities but they wouldn't be nearly as bad. Just take away the tax ower of cities and they will die. Counties will take their place.
Anyway. That's my vision. A place where the only tax is a sales tax: 10 for the feds, 10 for the state, 10 for the county and an import tax. That's all folks.