Let's take Nova Scotia as an example. I would think that it would form one region, so we would have a reduced number of single member seats. Instead of two seats for Cape Breton, perhaps there would be one MP representing Cape Breton in a single member constituency. As for seats, you would use the remainder of the seats for Nova Scotia as top-up seats, and the MPs would be Nova Scotia MPs representing the region of Nova Scotia. That would allow for proportionality in the end.
