Do you not consider paying the AI to declare war on other AIs 'abusing the AI'?
Me too. I'm quite a fan of Marbozir's LP videos, but he ALWAYS does this and i think it's absurd the AI are willing to fight an equally strong opponent and loose most of their army, get a load of tiles and trade caravans pillaged for a bribe that is equivalent to only a tiny fraction of their daily income as Deity AI.
OTOH I have a hard time believing it is possible to win at all on this level without such tactic.
so here's a challenge - house rules
1) No bribing AIs into War
2) Don't exploit the "white peace" bug.
If you are loosing a war, the AI might offer a peace deal where you had to give them gold, cities or luxuries to forestall the attack. A few patches ago, this was a "take it or leave it affair". Accept the terms, or, if you think you are strong enough, keep fighting till the AI realises the tide is shifting and it offers you a better deal.
Now, you can simply offer a white peace and the AI always accepts, even though your capital was down to red health and surrounded, and the peace deal suggested by the AI involved you giving them everything. This cannot possibly be WAI.
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I also tend to give myself an additional house rule, which is basically to play the "good guy". I don't DoW anyone unless they are already a warmonger, having captured cities off peaceful Civs and CS.
I've only managed one science victory on Deity with these rules, because i got a very isolated start. Normally it's extremely tough i would say. You are bound to have the weakest army because of the AI's advantages, and since the house rules don't allow bribing them to attack someone their own size, they come after you. Most of my previous games i was at war, defending my little patch of turf, pretty much the whole game. Which caused me to narrowly loose out on the space race each time, because i was prevented from trading with my neighbours, constantly having tiles pillaged in my border cities etc.