I truly do not see how this idea of Australia and Canada is being entertained, they are both new civs that havn't done anything signifficant or of note and both only got independence just before WW2 so neither of them are even a century old. Not to mention Queen Elizabeth II is officially still head of state of them both and the Australian flag still has the Union Jack on it.
I truly do not see how this idea of the Shoshone is being entertained, in the scheme of things, they are a relatively new civ that hasn't done anything significant or of note and both was never really a country - they didn't even play a role in WW2. Not to mention they were overtaken by the US government who now owns all of their lands and there were never really more than 12,000 Shoshone people historically...
I truly do not see how this idea of the Zulu is being entertained, in the scheme of things, they are a relatively new civ that hasn't done anything significant or of note and both was never really a country - they didn't even play a role in WW2....
I truly do not see how this idea of Polynesa is being entertained, in the scheme of things, they are a relatively new civ...
I truly do not see how this idea of Brazil is being entertained...
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Civ V is all about hypotheticals, worldbuilding and ludicrousity. Civilizations like Venice, the Maya, the Iroquois or any of the aforementioned civs didn't really a contribute amazingly vast amount to Global society, but they are there anyway for flavor and unique playstyles. The Polish never invaded Mogadishu or built the CN Tower, the Dutch never conquered China and razed half their cities and the Aztecs sure as hell didn't nuke the Babylonians because they disliked their Communist ideals. Australia and Canada can offer and provide unique and interesting gameplay experiences and would subsequently make quite a bit of money if Firaxis were to include them.
To say that Australia/Canada shouldn't be included because of the reasons you mentioned is pretty darn stupid and has been discussed to death a million-bajillion times.
On topic though, top 9 civs:
Hittite Empire
Australian Commonwealth
Canadian Dominion
Mughal Empire
Argentine Republic
Kingdom of Kongo
Olmec Peoples
Indus Valley/Harappa Civilization
Nepalese Empire