I can think of a few new nations that you should consider adding
1. A US puppet that covers the US states between greater California, Texas, the Confederacy, and New England. Some sort of Midwestern Republic.
required
707 709
791 792
690 689 688 687
790 789
787 788
699 698 697
696 693 695 694
692 691
623 624 621
620 625 626
619 627
622 618 617 616
641 640
capital 620
Extra
West Virginia
629 630
ohio
615 628
But with those cores the US states of New York, Pennslyvania, Maryland, Delaware, and New Jersey are still not covered (because they aren't a part of your NEw England revolter or the confederacy) so maybe they should get some sort of revolter as well. With extras cores on New England, ohio, and West Virginia
2. Also I think there is a need for a revolter representing the US Blacks in the "black belt." The Comintern officially supported Harry Haywood's demands for an independent country for US blacks. So it would make sense as a revolter. Perhaps it and the CSA's required territories could be arranged so that both could possibly be created.
http://en.wikipedia.org/wiki/Black_Belt_(U.S._region)
http://en.wikipedia.org/wiki/Republic_of_New_Afrika
http://en.wikipedia.org/wiki/Harry_Haywood
New Afrika's revolt info
Required:
682 681 679 680
678 675
676
647
Extras
683
645 644
637 635 636 634
674
672
669 670 646
capital 680
The required and extra cores for New Africa could then become extras for the confederacy. So that both could be given independence by some benevolent foreign overlord.
edit: I'[m working on tech teams and ministers for this. I'll sned them your way if interested
3.Kashmir is already a revolter in Arma but if you release it you can not release India or Pakistan. Kashmir's core and extra territories should be extras for both India and Pakistan so all three can exist.
4. Also, I think nomonhan was working on a similar mod to try and make use of Arma's many extra tags. You should PM him and get him involved in this.