The proportion recommended for Quebec is 60-40, which is the proportion in the Scottish system. A slim majority would be formed of local members, as is the case in the current system, and the 40% minority would serve to reduce the distortions under the current system. In his report of December 2007, Quebec's chief electoral officer studied the feasibility and appeal of this formula. He concluded that 60-40 was the right proportion, and that it would reduce distortions as much as possible, while helping people transition from the system they are used to. We can't start from scratch.
On August 29th, 2016. See this statement in context.