I had to bail out of Confederate States of America after a half hour of viewing.
The mockery made of Ken Burns/PBS documentary style kept me engaged for awhile and I thought Willmott handled the bona fide historical material pretty well. The humor was not heavy handed but the compounding alternatives were overwhelming.
Kevin Willmott should collaborate with Harry Turtledove. Harry has proved there is a market for out-of-control alternative history.