ALL citizens, or informed / educated citizens? There's a whole network of agitators in the US whose entire job / goal is to make sure there are people unhappy with any tax, no matter how great the benefits.

Good question.

Citizens still need to come to some consensus.

One key feature I didn't emphasize was the requirement for the tax rate to never rise to a significant enough level to be a burden on the wage-earning taxpayer.

Otherwise it's just a sinkhole which brings down the prosperity ceiling with it.