One thing to note about this is that part of my reason for using the four regions is that I do think it fits with how many Canadians see Canada divided up into regions. I wanted to try to fit with that narrative as much as possible, while still making sure we count the votes of people in places like the territories and P.E.I.
The other thing to mention, though, is that in MMP the region is very visible to the public, because your ballot is informed based on that region. You would know whether your region is Alberta or western Canada. With DMP the region is not very visible to the public. The public would see their ballot with their local candidates, and they would have two MPs.
So I think the front that this would put to the public would not emphasize that. I don't think that gap would be very large. There wouldn't be much that people would have to get used to there. It's not something they would interact with on a daily basis, as they would with MMP.