We haven't talked about insurance costs since I joined the Board.
I wish that overall TD costs were lower, but I'd reduce player fees before I would discount the insurance. I believe that $50 to insure an event is a very good deal, that liability does not decrease with volume, and that it would be cumbersome to keep track of "series" vs. "nonseries" events.
All this is, of course, personal opinion. For the official policy you should call the office. Perhaps there is some aspect I'm not aware of.