Calling it CW2 infers a connection to the first civil war. The revolutionary war was also a nation tearing itself apart so by your definition it was also a civil war. If one had the desire to make a connection between a past conflict with a theoretical future conflict I think it would be wise to connect it with the revolutionary war rather than the civil war.
..which could work until the "progressive" areas run out of money and came demanding to be "bailed out"..