I’d support that.
I would also support a requirement that the franchise be restricted to net taxpayers. That means that in order to vote you have to pay more in taxes than you receive in public support.
Of course, that would virtually wipe out the Democrat Party voter base. Not that I consider that to be a bad thing.
I agree with raising the franchise age (30 is OK...40 is even better) and restricting the franchise to net taxpayers, but specifically net property tax payers. This comports most closely with original intent and does not further entrench the income tax. One exception: the franchise should be awarded at the honorable completion of volunteer military service regardless of taxpayer status.
I realize that these are fighting words in today's Amerika. Don't much care, either.