Property taxes are regressive as well. The overall fairness of the system will change very little, if at all. Property taxes are not tied to income and have to be paid by people on fixed incomes and by those with low incomes. Working families benefit from increased activity in the construction trades. The state sales tax is less regressive than the LOSS tax, since the local option tax does not exempt utilities, which has a huge impact on families in poverty.
Sales tax is the only viable political option.
The sales tax is already in place. This just ensures fair distribution. This is a pretty good idea, but I don't think it's possible this year. If you wait, you get less. In just three years, local option tax for schools has gone from zero to half the taxable sales in Iowa.