I think your question is mainly for me, and I'd like to correct something: we don't want to change that ecosystem. Quite the opposite; we want to preserve it. At this time, authors give producers licences so that they may use their works. We don't want to change that.
We simply want to clarify the act to include a presumption of ownership. That means that absent contrary evidence like a contract with a producer or a claim to copyright by another creator, it is presumed that the scriptwriter and the director are at least authors of the work. That ambiguity needs to be cleared up in the act with regard to the presumption of ownership.
Under the act, the producer is presumed to be such if his name is mentioned in the credits. This wording, under the subtitle “Presumptions respecting copyright and ownership”, could lead people to believe that the producers are the authors. However, that is not the case, and nothing in Canadian jurisprudence states that producers are authors.
The authors are people who use their talents and their judgment to create dramatic works. I respect the work of producers, who take financial risks, but I don't think that creating a budget is equivalent to creating a work of art.
The current system works and we do not want to change it.