In a regulated environment the compliance with development processes need to be proved. An organization needs to be able to access all artifacts for about 10-15 years depending on the regulation requ...
in 14.x you can achieve an individual review which would be used to record your long term audit support. Agree that collab is not the repository of record, but it does have the review data so at a minimum a report of the review needs to be captured for posterity.