One characteristic of Canadian whisky that distinguishes it from Bourbon is the practice of blending.
Blending is done by taking a "base" whisky which will form the bulk of the blend and improving it through the addition of small amounts of blending stock. It is this blending stock that I wish someone would release. There have to be some pretty flavorful whiskies in there. Of course, this exactly describes the situation in scotch whiskey before the first single malts came on the market. One would think someone in Canada would see the connection and figure out that it might be a good business proposition to release some Canadian "singles."
Why haven't they? Maybe the whiskies really suck. I can't think of another explanation.