Right. I think you'd encounter quite a bit of resistance to that in Atlantic Canada. Atlantic Canada is a very artificial construction, remember. It doesn't really exist as a region, the Maritimes perhaps more so; at least there's historical resonance for that identity. But I think provincial identities are so strong that it would be difficult to erase them when thinking about regional representation. I think it's possible to do it without resorting to lumping all Atlantic Canadians together into one region.
I would be happy with any system that produced greater proportionality of result, but I don't think you need to resort to this particular device.