Count me in as another who wouldn't mind so much as long as it's a replacement for the income tax. It encourages saving, and if spending needs to be encouraged at any point, it's easy enough to temporarily lower it very slightly and spur shopping sprees (with increased sales volume making up the difference). Straight sales tax does shift the burden toward the poor, though, which is why the
FairTax is interesting. However, the FairTax is also too voodoo-y to gain traction.
My primary desire is for tax to be both simple and DIRECT. Right now USians have no idea how much they pay in taxes because so much of it is hidden by taxing the corporations (employment tax--your income taxation is TWICE what you think it is--and corporate tax... these all just get rolled into higher prices).
Every individual should be aware of exactly how much they are paying in taxes. Otherwise there is no accountability.
Of course, I also believe that taxes in the US should not be levied by the federal government, but instead by the state.