How are the Americans supposed to be unique? And will they keep their revolutionary units?

They look, and play like the British in most scenarios and in the campaign. In real life they were just separated from the British, and basically was their child. I don't understand how America will be unique and fun.

I don't want a filler civ that plays exactly like the French/British, Nor do I want a Civ with factory houses.

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ALSO: New civs often came in batches, Inca and Swedes, Japan China and India. It will only make sense if it comes with a partner civ (Italy)