How will you change AACW Ageod? My only two gripes with the original was:
1) Maintaining control of the Southern states
2) Playing as the Union gave a very short game
Creating a game that really represented the huge struggle they had in the first two years without the very limited incursions the South did (and annoying the Union players in the process) would be good. A balanced game that stopped the Union trashing the South in a year.
I loved the way you could build up your forces, but I'd won before I really begun.
Remove the limit on the types of troops you could order, it allows freedom of choice: you live and learn but have fun if you get it wrong (for an a-historical game). Change the costs of units if you think a choice (like Sharp shooters) will be more popular).
Allow greater railway building, it gives freedom of choice, again. (freedom of choice is always good, unnecessary restrictions are not)
More economic factors as well, as well as the actual European non-intervention. The French and British governments played an important role. British ship building?
I played a ACW game ages ago, back to the early '90's I think, it had two great features: Hospitals and recruitment centres, both were seriously important and effected the game, but again, playing as the Union I was able to trash the South repeatedly. The next ACW game needs to get the balance right, whilst giving the player freedom of choice! Let us make our own mistakes.
"Whether it's the best of times or the worst of times, it's the only time you've got" Art Buchwald, U.S. Journalist and humourist