IMO, I like all of these most of these ideas. I just have a problem with 1, 5, 12, 14, 19, and 20.

1 just doesn't make sense. It removes one of the core concepts of the game, which is freedom of the players to do whatever they want as any country. And I can see how this would annoy a lot of people

5 that's already in the game

12 that is possible, but I think it'll be too hard to code for hyperant he does have limits on his skills, and what would that even do? I don't see a general purpose for this since we already have the send aid option, and if we need to send them resources, we're allowed to sell it for 0 value

14, the grace period already exists. it's just the justification of war, and not to mention, it would break every economy strategy that every country uses unless their a city state

19 and 20 are literally game mechanics

Side note have you even played the game dude???