45°38'N-13°47'E;13800668 said:
I think that simply we should calculate score for the team the same way it's calculated for single players. If it's harder to compete against a team, then it's harder as it's supposed to be.
I understand your concern if you can't find an ally, but maybe next time you'll be more careful in diplomacy.

You have to adapt to a different game each time instead of expecting the game and other civs to develop as you wish.
I'm usually able to find one, I've always got at least one AI in a game that's Friendly with me and is happy to assist when leaders declare on me out of the blue. We share religions, pass techs and resources to each other, they may not be human but they're usually available to help so you're not completely alone in the game and off to do everything on your own in a long and tough struggle for survival. There's only one AI I know of that will declare on people at Friendly relations (Catherine, unless AND added in some as well or changed something) - most everyone else you've got at least a shield there unless something goes wrong. Pleased AI will sometimes take events that benefit them while hurting you (The Airliner Crash givng espionage boosts against you, etc) while Friendly AI frequently avoid them. It depends on the Leader, but I've noticed that when they really like you, they try not to hurt you. Usually
So when someone declares war on you, they start to get ticked at the person who hates you. Sometimes even declaring on them without you asking. With the Appeasement this is a bit harder, since the +3 relations often offsets even multiple declarations on their other 'friends' and Interventionism means they can duck out of a war regardless of how it started.
It doesn't make it impossible to find friends, just means it's a touch trickier to manipulate them - which is a good thing right?

I'm very careful with diplomacy - it's one of my favorite aspects of CivIV. Once an AI starts getting friendly with me, I do everything to keep that friend, and be careful who I make deals with afterwards and keep a close watch on who their Worst Enemy is. However, I also like warfare, so finding a balance is sometimes... Tricky
As long as it doesn't upset my picked friend, anything goes.
I'm just a little concerned it might make it TOO difficult to get the AI to help you for real, rather than just goad them into destroying themselves. It was very profitable to get the AI to war with and hate each other in BTS, very easy to do so and it often crippled what would otherwise be peaceful friends gifting each other techs.
You can't do that in AND anymore without racking up penalties, so if you want to bribe a war to stir up chaos, you gotta be sure it'd be worth the trouble that will follow.
What I'm more concerned with is that it won't be worthwhile to find an ally. If they're not going to help you when an enemy leader comes knocking on your door regardless of their diplomatic relations with you/them, then why not just Conquest every game?
Interventionism seems to be a fairly popular civic to run once it's unlocked too.
As said before, these concerns may very well be just overthinking and making a large problem out of nothing. However, if the whole world is running Interventionism and they're programmed to duck out of wars immediately while running it... Well, I can't imagine things won't get a little strange after that
*EDIT* to add, that it's very likely I'm not going to have to worry much. Unless a revision update changes how these things works. Since right now, I've actually had many leaders running Interventionism, but only the "peaceful" leaders would use it to duck out of wars at the first opportunity. Most leaders would wait a few turns, or even spend decades at war. However, as already pointed out - in my experiences Interventionism has been a very very popular choice amongst the AI, several times all but one or two AI have been running it - like Nationalism, it's something the whole world would be running at various points. Which is where my concern stemmed from - since it opens up the possibility that everyone can just avoid war altogether to enjoy a peaceful game.