I honestly think it would screw the economy because stores currently expect large amounts of money coming their way between May and June/July.
Then when they don't...they get screwed royally. So I'm willing to bet that would hurt our economy more than help it. That, and if you think about it, you're getting your tax refund to replenish the debt you went into in the holiday season. People would go into the same amount of debt with your plan, but just buy cooler . However, that would the citizenry in the long run, because then they can't get out of their debt (people are too stupid to spend within their means), so they'd just get boned.