In the early years of the Republic, in most States, only males with property were allowed to vote. Their logic was, "without skin in the game, you can't vote objectively" or some think along those lines.
I can see the abuse that could take place under those rules today but it would be interesting to see what might happen, if we could some how go back to a requirement to have some "skin in the game". May be if you pay a certain amount of taxes. At least that way, you could have some input in who and how your taxes were used, and the large business/property owners couldn't take advantage of the working class.
Pipe dreams of course, the way we're headed the Syrians and Iranians will be getting to vote soon enough.
DC