I don't really know what options are realistic. I had assumed that anything across provincial boundaries would not fly, would not be possible. If it was possible, though, that opens up a lot more opportunities for a place like Nunavut. Assuming that's not true, I'd say our only options for merging would be across to the other territories. That could be the option that's put forward to Nunavut voters, and they'd have to decide if they wanted to merge with NWT or Yukon. Our size makes that seem not particularly attractive, but we seem to be in a position where Nunavut doesn't have a lot of attractive options on the table.
If additional MPs were added to the north, that would obviously open up additional options, or if boundaries with the provinces were not a no-go, then that would open up some opportunities to maybe merge with Labrador. I assume that those things are not options.