Do you know what they could do? Fine? Suspension? I'm all for using a stick to ensure these guys get the calls right in the future even if it doesn't retroactively change the outcome of any game.
I suspect the B12 probably really doesn't have the money to do the work they need to do to find the best refs. I'm just speculating though. It wouldn't surprise me if they're just happy to fill the schedule with decent refereeing resumes each year.