>>2186547
The problem with AE in EU4 was that it didn't scale.
It doesn't really make sense that the entire HRE, France, and England form a coalition against a HRE free city that conquered 5 provinces.
What AE should care about is the balance between the great powers. Russia, France, and Ottomans got constantly fucked over by the rest of the great powers because they were getting out of hand.
If the top great power is much stronger than the rest, the others should keep attacking it, even if they don't actually expand, simply to keep them in line.
Similarly, when a great power takes land from lower lower-ranking great power, it should be seen as highly aggressive.