Chris, you're using your experience as the basis for making broad generalizations about how it is or should be everywhere. Have you had to pay $700 course fees like in Los Angeles? Do you live in an area with few PDGA members? Do we want to discourage TDs from trying to run B-tiers because the risk is too high? That policy would not be in the best interest of the players overall. No potential TD is going to sanction a B-tier with low turnout in mind. It's more upfront cost with sanctioning for one and they still have to do the work to gather sponsorship. Why would TDs choose to do a low turnout B-tier when they could reduce their risk sanctioning as a C-tier?
Rater of the tossed arc.