I think you raise an interesting point about potential cost savings under the formal access system. I can give you an example. I know that the City of Toronto, between 2008 and 2009, cut their formal FOI requests by more than half, and they had been at one point the largest recipient of FOI requests in the province. So there can be that beneficial effect, although that might not be why you set out down this road.
On February 7th, 2011. See this statement in context.