Yes.
To the extent the agency would act as a secretariat to the commission in all contexts, maybe you could add as a purpose of the agency significant, meaningful public participation. A definition could be helpful also, as well as insisting on public hearings, not just submitting comments online. Getting people in the room together is a great way to learn, much better than it being just based on paper, at least that's been one key success in Quebec.
To be fair, I've looked for a legal component that showed why the BAPE worked so well in Quebec. It's a question of institutional culture, so the first people who will be named as commissioners and will do reviews will set the culture of the new institution. That's not a legal requirement. It's the importance of the first people who will be there.