A shopping list would be sensors and a means to track, detect, and engage a cruise missile. If we had a shopping list and unlimited resources, that also means point-defences, for example with a ground-based defence system that would protect our most important sites within the Canadian land mass, which we don't have now. From a ground-based or defence point of view, this is something we don't have. That might be the biggest difference from the configuration we currently have.
On April 19th, 2016. See this statement in context.