http://dl.dropbox.com/u/10701954/Tax...ions%20v2.xlsx
I put this together awhile back. Calculations for various tax rates, scales, patrolling, etc. Shows break even points, cumulative income etc.
It not specifically a strategy. But it can come in handy when considering a strategy.
However, the bottom line conclusion I draw from it is two fold. One, overtaxing is very powerful in that the break even point for cumulative gold is fairly late in the game. Depending on scales, admin, etc. often after turn 40 or 50. And gold early is always worth far more than gold late.
Two. Overtaxing is more or less powerful depending on the scales you have chosen. Because of the way income in calculated (basically everything is multiplied together), that when a high tax rate is multiplied by the already high income from good scales the effect is even more dramatic. Opposite with bad scales.