Matthew recently wrote "…I don't think a fan effort to have the team spend more money on payroll would accomplish anything." I can almost envision a groupon where if X fans agree to buy Y tickets, then management will increase payroll by Z amount.
Fans could buy the tickets and would not be locked in until Y tickets were sold. If, for whatever reason, payroll was not raised to Z amount, then their tickets could be refunded. This would be a way for fans to actively increase payroll if they truly want that. I could imagine management could set up terms such that XY>Z so that they could make a profit.
It has been stated many times that a losing team's problem is cyclical. The team goes young and loses. The fanbase decreases because many do not like seeing bad baseball. Therefore, even with obtaining cheaper pieces the GM cannot add pieces through free agency because the budget was slashed as revenue decreased. This would seem to be a way to increase payroll without risk -- especially if you spread out the games available.