I would be inclined to suggest that the first order of business would be that if you're going to create a commission to start with the leaders' debate, it's quite a task to deal with the full magnitude of an all-candidates' debate in all 338 ridings.
That said, a commission could conceivably set out best practices and guidelines that could serve as a model code for people organizing debates. That's a different matter from having a commission involved in every debate in every riding in an election.