Sounds good. I have wanted to play a game as the CSA so the ACW scenario looks interesting but I don't know if I would want to start that late, especially when the CSA won't have much room to expand (outside of the U.S.) if they win the war. I do have a few suggestions though and the 1st one might balance things out and help get people to play the scenario instead of the GC.
1. Make the Manifest Destiny event fire for all nations whose primary culture is in the American group and not just the U.S.. This way the CSA and Texas might get the opportunity to expand westward if they survive. If the U.S. already controls the American southwest though you could still add in an event that gives Texas/ The CSA (if they control Texas) cores in Northern Mexico and the opportunity to expand to the pacific down south. It's not entirely realistic, but hey neither is the South winning the civil war or Texas sticking around. This would add more depth to CSA and Texas games as well as give more people an incentive to try the scenario since they would need to have Texas to get the event to fire.
2. Allow for espionage. I didn't use it too often in Eu3 but I see a lot of potential for it in V2. You could have spies sabotage factories in other countries or help promote revolution.
3. I think there should also be a remove from own sphere option. To my it's kind of silly that once a country lands in your sphere you can't declare war on them and you can't remove them from your sphere in order to do so. I guess the simple answer would be not to sphere theme in the first place but still it seems kind of silly not being able to declare war on them just because you hold a lot of influence over them.