The main defect is that it puts Quebec's anglophone minorities and Canada's francophone minorities on an equal footing. That's a major defect that has spawned a succession of measures and provisions that fail to take into account the sociological reality of the communities.
I think that programs that are subject to court challenges often lead to lengthy or interminable struggles essentially as a result of this misunderstanding, particularly when the judgment is ultimately declaratory. No implementation is therefore required. However, the act should include, perhaps in part VII, provisions that would render binding the findings that the courts or the minister might make. Otherwise our friends from British Columbia may have to fight for 10 more years to achieve actual results.
There's a distinction between a legal victory and a societal change.