I'm going to stop after this one post, but I think

[llamabeast]

Has it ever occurred to you Lord_Bob that the PD difference might be by design, and could even be considered a good thing?

I also agree that a game this size must have glitches and cannot be issue-free, but nonetheless I feel that it's a good thing that some nations have really bad PD while for others it's very strong - it adds character and interest to the game. I would not be pleased to see all PD buffed. I understand that that's just my opinion, and possibly a controversial one - but it doesn't seem to occur to you that that opinion could exist.

If you want it fixed so badly just make a mod for it, and if you want to play MP games with your mod then you can host them. Easy, problem solved.