I think the answer goes back to the very beginning of the question, that is, whether there is discretion by the minister to cherry-pick what measure is deemed as key. Given that there is already annual reporting based on consensus among the provinces and territories, the key measures that will be reported through the assessment report will be drawn from that consensus vehicle, therefore minimizing any probability or optics that the minister is cherry-picking.
On June 7th, 2021. See this statement in context.