Mr. Easter, the issue you raise goes to the heart of a fairly long-standing and fundamental constitutional principle regarding the separation of powers as between Parliament and the Governor in Council.
Essentially, a statute can, within the scope of the statute and within the constitution, provide authority to the Governor in Council to regulate; it can instruct the Governor in Council to issue regulations on a particular topic. However, the Bloc amendment would go well beyond that type of statutory authority and would explicitly limit the Governor in Council's discretion and actually start to stipulate the content of the regulation.
There we have a blurring of the distinction between the role of Parliament and the role of the Governor in Council and we have no precedent that we are aware of, in terms of statutory authority, that goes this far. Indeed, this issue has arisen in previous committee discussions, where there was more notice provided to government officials, and various Department of Justice officials from constitutional law have spoken about the nature of this constitutional provision.
Fundamentally, it speaks to the very issue you address, and the practical reason for that is the one you described. Parliament may want to provide authority and may want to say we must address this particular issue, but the details of how we address the issue are more appropriately dealt with by the authorities and discretion provided to the Governor in Council rather than being stipulated through statutory authority.