I can go first on that.
A binding recommendation, which sounds a lot like an order, is very much outside the government's intent in the design of the entire review regime. The regime is predicated on an independent body that operates at arm's length but then makes recommendations to the minister or the relevant deputy heads, those deputy heads in turn being accountable and answerable to the minister, who is answerable here for the decisions that are made in response to the recommendations.
If the commission begins to issue binding instructions to those agencies, the concern is that it begins to erode on the axis of accountability that exists between ministers and deputy heads, established throughout the federal statute book.