This is very, very improbable.

First, a pipeline will cause massive protests, particularly in the First Nations communities affected as well as Quebec - so how will this unify the country? Secondly, it is unlikely that Canadian refineries will invest the billions of dollars needed to upgrade dilbit and refine it when cheaper, light crude is available elsewhere and when we should be reducing our use of oil in any case. Yes, let's reduce our oil imports - by reducing our oil consumption. In the end, that is by far the better solution.