I'm fairly new to Parks. I wish I could give you a more comprehensive answer, but in terms of townsite management, it is a real collaboration.
In the case of Banff, it's an incorporated municipality, so it has quite a bit of power, unlike any other townsite. My experience so far is that things don't happen in the Banff municipality without the municipality driving much of it. It does all of its own development planning and things like that. I have no knowledge of anybody thinking about expanding the municipality. If it does happen, then it will push up against Parks Canada's normal operations and mandate.