Yes OK, we are all allowed to have our own opinion. You read mine before, and now I read yours. We can agree to disagree.
Someone should make one up for Canada, I'd love to play as a Canadian.
Anywayzz... I dunno what to give to these Civs, but I know I'd like to see the Incans, The Mayans, The Persians, The Japanese, the Vikings, and the Canadians.
EDIT: Ooh, I completely forgot about the Celts. I'd like to see them in too,
The Japanese are already in the game.
Why would Australia be a civilization? Not a particularly old civilization, imo. The civilization started bascially a few hundred years ago when the English came to the island and used it as a prison camp. If a civilization at all, they should start in the industrial era because they didn´t exist earlier. The key up until today has been that the civilizations in this game series has been either ancient or one of the "colonizing"/war time civilizations (read American, English, France). Australia doesn´t fit any of those criteria.
Sorry for the critical comment, but I think there are so many more civilizations that have earned being part of the game, e.g., Vikings and Persia.
Actually Australia has the longest unbroken culturai society, dating back 40 - 50,000 years. It's true that you would be hard pressed in calling it a civilisation, as the natives never put one brick on top of another during that entire time. However it still remains that they were the rulers of a Continent equal in size to Europe and the USA for all those years.
My vote goes for Persia, Carthage, Dutch and Ottomans. For Persia, I like the first traits suggested. Carthage and Dutch I believe should get some sort of bonus for harbors/trade, and I'd like it if Carthage didn't get a negative bonus when attacking from the sea. I liked the Ottoman suggestion.
For Canada!
Starting bonus: +1 Food From Snow/Tundra Tiles
Ancient bonus: +1 Trade From Trading Post
Middle ages bonus: +1 Production from Hills.
Industrial bonus: +1 Population for Newer Cities
Modern bonus: Half Cost Wonders
May not be balanced, but at least I tried!