Starting with ISAF for safety is great. That is where I started
when I set our boat up safety wise, but not where I finished
Your argument is putting something on me as an individual if I wish to participate in a rally - Incidentally most rallies are doing what you suggest in one form or another, all I am sure will follow soon.
ARC entry fees currently are based on length but you will drop about a cool 2-3K in fees. That guy who will come on your boat with his ISAF clipboard and declare you BFS safe isn't free you know
( nor will he be there with you in the liferaft).