Honestly, as an European, an expansion focused on the Americas would actually be quite interesting.
What I'm having a problem with is an ACW-focused one. I mean, we have the south, the north, and that's about it, right? You could throw in Canada, just for the sake of it, and yeah, we're done.

Now, an expension covering the history of Texas, the ACW and Southern America's struggle for independance and the war of 1812 would be quite neat.