The English name of the Conférence pour l'harmonisation des lois is “Uniform Law Conference of Canada“. Obviously, we did not like the word “uniform“ in French, because that is not what we want to see. That is why we opted for “harmonization“.
It seems to me that this is the typical case for which this Conference was created, in other words, a situation for which it would be beneficial to have a common stance throughout Canada and a common ground in order that, first of all, there be consensus on the aims and, secondly, that the legislation be harmonized.
I do not understand why the matter was not placed before this Conference. My impression is that if it were, unless a province was really opposed to the idea underlying this project, the whole matter would be resolved within two years, one year to reach some consensus, and there are always deputy ministerial meetings between conferences, and the following year to agree on the laws that could be put in place in the 10 provinces of Canada and the territories.