I suspect that once Peter Island adds their 60+ balls and once Saba and Bitter End balls are back in service boaters will relax and trust that reservations will generally not be needed. With so many more options coming on line it is hard to see the need.
We did three weeks in Nov/ Dec with no need for boaty balls and are on board again now. I simply refuse to spoil my holiday with the frantic 7 am on line reservation scramble.