I have no interest in Canada joining the EU, which I see as having a bunch of governance problems of their own, but being close allies with well-integrated and mutually supportive economies via trade and other agreements sounds good to me.
Honestly, the idea floated that Canada would form a bloc with the UK, other commonwealth countries, and the EU, then have that bloc negotiate trade agreements with China sounds absolutely ideal to me. That's apparently already been raised by Carney in private talks on his visits to Europe and the UK. It would unite most of the world and cut the US off unless they changed course on their insane path. That's the foundation for a much more positive world order