Yes, it's not an easy question anyway.
I think the rate of assimilation and language transfer to English is important, because the last data I saw was close to 60% in Manitoba. Obviously, some parents no longer speak French at home, even though they are of francophone origin.
As for life outside the home, I came across an article that talked about living one's francophonie in Thompson. The woman who was doing the interview said that it was possible as long as she got together with francophone friends, but once she got out of the house, it was over. Is that pretty much your reality?