I will answer first and Ms. Sai can round out my answer.
Under the current regime, a decision is made directly by the Privacy Commissioner of Canada. The process takes about a year, in the case of major investigations.
Based solely on the experience of the Competition Tribunal, I estimate that this added step will extend the process by a year to a year and a half. In addition, it will benefit companies that appeal against a Commissioner's decision. I see no benefit to consumers, who are typically the ones who benefit from the Commissioner's decisions.