bonafide11
Worker
War-mongering itself doesn't need a buff. The AI is terrible as is when it comes to the war-side of this game. And when you take one of its core cities, such as the capital, it generally is out of the game for good unless they were a massive runaway to begin with.
In other words, other than map control or role-playing reasons, war-mongering is more about tearing down your opponent's empires than building up your own.
I do think the war-monger penalty system needs a complete overhaul.
1. You shouldn't get any diplo hit for simply declaring war unless you have a declaration of friendship. Struggles happen all the time world-wide and they are typically not a world-wide concern until cities/land is actually taken. Not to mention if you declare war on a common foe, the Civ you are attempting to help will often label you as war-monger. You should have the freedom to help fight battles with your own allies--if no cities are taken, you shouldn't get penalized world-wide.
2. You shouldn't get any diplo hit for liberating a city other than from the one you are liberating it from. It is illogical that you can liberate 3 CS's from Genghis Khan and you end up as the war-monger.
3. war-monger penalty shouldn't be a simple yes and no scale. It should be based on something like city size. For example, you declare war and take a puny 3 pop. city in the middle of no where. Whatever. It shouldn't give the same penalty as taking another Civ's core city.
4. You should, however, get diplo hits if the enemy is attempting to sign peace and you keep refusing. To counter players from being at perma-war farming a Civ for exp and keeping it drained of military without penalty.
I agree. I find warmonger to be beneficial enough as it is, but the warmonger penalty is overkill. If I was constantly declaring war on other AIs and completely conquering them, I can understand getting a diplo hit from the rest of the civilizations, but it makes no sense to me that taking a city or two from an AI who declared war on me makes me the warmonger to every other player in the game. Even other civilizations who dislike the one i am at war with will often penalize me.
Domination victories have become more difficult than other types of victory due to the fact that you can't find any AIs to trade with you for something that you did thousands of years ago. It's not fun in the gameplay sense or realistic in the real world sense.