AI Improvements
The AI has received its usual slew of improvements, particularly in the areas of naval warfare, trade and budgeting (as well as plenty of bug fixes).
In addition to these general improvements, some work has also been done to make allying with the AI a better experience. First of all, the importance AI places on trust has been increased considerably, with AI nations much less likely to turn on a highly trusted ally. The way you make the AI trust you has also been reworked - it's no longer enough to be allied for a long time, you have to actually fight in their wars and give them things they want in your wars if you want the AI to trust you. If you actively work to help your allies, they will be more likely to stick by you when the going gets tough.
Additionally, a new opinion modifier called 'Wants your provinces' has been added, which scales according to the amount of land you own that the AI would like to own, and with the importance they place on that land. Additionally, the AI is now much less likely to turn hostile against a nation they have a high opinion of, and will never go hostile against a nation they have more than +100 opinion of. This will show you exactly why an AI nation is hostile towards you, and will cause them to behave more logically; an AI nation that likes you a great deal won't break the alliance just because they want a province or two from you, but if they're looking to take everything you own nothing will push that opinion into positive numbers.
View attachment 108252