That’s for full EU members part of the economic union. There is a whole process for that which takes a few years. Britain had a good deal which they threw away (use their own currency but they’re a part of the broader economic union).
There’s already visa free travel from Canada to the EU and trade deals in progress. It’s unclear what specific benefits the associate member deal provides.
Tourist visa. But this may end up including student and/or work visas.
While I would love to be able to live in Europe at-will, but it'll probably mean specific employment visas that will be relatively easy to get (similar to the USMCA T1 visas). I'd be happy if Canadians would be able to use the EU passports lines, though.