You're thinking out of the box and that's a good thing. However, here's the problem with your idea. In almost every drum corps organization the corps itself is the primary income producing component. If you eliminate that for any period of time, the bulk if not all of the organization's income from dues, sponsorships, souvineers, show fees, etc. dries up. Once that happens there would be little to nothing left to save.
Although many corps over the years have "taken a year off to get finances in order" most never return to their former standing and many never return at all. Although there are some great exceptions,realistically it's an option of last resort.