@Zallomallo:
Hmm, how about a chart integrated into another one, that shows who’s at war with whom. And maybe some player aids for each power, like in 50th.
I had given thought to the at war chart and messed around with some designs for it. Nothing that I like enough to post just yet.
As for the player aids, there already is one. They aren’t specific to each power, but you can print 2 per sheet and have as many as you need for each player if you want. It seemed unnecessarily redundant to have a player aid that would just have a different country colour or logo in the background but all the same information.