The short answer is yes, definitely, one hundred per cent.
The slightly longer answer is that not only should the demographic weight of francophones be restored, but it should also not be done in isolation. Making progress on immigration can't be done solely by working on immigration. You have to factor in diplomacy, education and the needs and specifics of the regions.
So yes, a strategy to restore the demographic weight is essential, but it cannot be developed independently of everything that's already being done.