I concur with the sentiment of restricting suffrage to those with a modicum of foresight. However, given how college education these days is subsidized to ensure against a shortage of underwater basket weavers, a degree may not be the best representation of being intelligent enough to vote.
A property requirement is both a more direct measure of one's long-term interest and one with greater historical precedent.
Yeah, I guess it's irrelevant that it is universally viewed now as a horribly classist and unenlightened practice, as long as it has precedent!
Why don't we just put all the people we don't want affecting our politics in camps, that has precedent, too!