As some people from Canada think, it is a good civ to be included as a City State.
That is me. The peacemaker/middle-power mythos of Canada is an agenda that would essentially be game throwing.
We pride ourselves for being America's friend, but friendly enough to be able to say no to them. We cherish our independent foreign policy, as we maintained relations with Cuba despite the embargo. That feels more like a city-state than a Civ does it not?
Canada (Ottawa) as a city-state that gives some sort of diplomatic bonus, voting bonus, influence bonus for justified wars would be a nice suzerain bonus. That's what we as Canadians do.
On the flip side of the coin, we're also a vast trading power, that I suppose could be slotted as Venice lite. Or Vancouver could be a mercantile/trade City-State.
But that's if we're trying to be historical. A lot of Civs make it purely to capture a market. This is particularly true of the nation state Civs of Europe. So Canada will be in if Firaxis want us to be in. I just don't think w'ere a particularly good fit but it hasn't stopped them before.