I too just finished reading through the thread. I can only speculate on the reason for the changes as being a more exciting finish for filming. When I first heard of this change, I was not in favor of it and made the suggestion that the same results could be obtained by awarding the Bianchi Cup to the Aggregate Winner. Shooting both division shows who has mastered the sport as a whole and after all, this is how it is done in NRA PPC and NRA Bullseye. This would keep ALL sponsors, OPEN, Metallic, and Production specific fully involved and invested in the presentation of the Bianchi Cup. Apparently, that suggestion wasn't well received.
I love shooting in general so I'll go along with whatever format they throw at us. They have to consider how they are going to assign the Top 16 when some of those Top 16 are going to be in other qualifying Divisions (Senior, Ladies, Juniors, Metallic, Production). Are they going to be considered Top 16 and bring up the next 4 from the other division or pull all sub-categories out of the Top 16 results and pull the qualifying people from that list?