As was said, CSE has been dealing with review as a distinct unit in its agency for the last 20 years to manage oversight and review. It's the same thing with CSIS and with SERC for the last 30 years. They are already conditioned to deal with review. There is certainly more thematic or sectoral reporting implied with Bill C-59 in the amendments, whether that's the LIB-16 reporting link to information sharing with a foreign entity, threat reduction, and so on. It's difficult to speculate what the real cost would be from doing this. They're already used to doing this.
On April 24th, 2018. See this statement in context.