Not being the department that in many ways would be called upon to increase the funding to those services, which would inevitably flow from that, I'd say that I'd support it very much. I think we need, minimally, a more accurate representation of our community size and extent on the ground. I think it would, as you said, tell a much better story.
My daughters both went through immersion schools and are fully bilingual. I suspect that when they have children it will be the same thing. There are elements of growth and expansion in the francophone community that are not captured in some of these data sources. I would love to see the kinds of improvements you've talked about.