I used to play with the "no great power penalty" for a while, and since the last update I've tried playing without mods. And oh boy, I've forgotten how infuriating this penalty is.
For those who don't know what I'm talking about, when your empire grows you get a malus in diplomatic relations, which forces your neighbors to declare war on you. Worse, it destroys all hope of diplomacy - no one will be willing to trade with you, for example.
Why is this even here again? No one likes it, as far as I know. It's just adding a "fake" difficulty to the game...