Canada doesn't share a land border with any Schengen countries, so I'm not sure how valuable passport-free travel would be - you're already taking a transatlantic flight, it's not like passport control is a huge additional hassle.

However, I could see a big argument for a labour mobility agreement similar to the NAFTA model, where EU citizens in a long list of professions have the right to work in Canada and vice-versa.

It says a lot psychologically to take a 'domestic' flight instead though, gives people more of a sense of togetherness