On an unrelated note, one of the ideas I have been toying around with in my head lately, is an optional 'Hardcore' module.
Basically, I feel that even with exploits plugged, CK2 is a very easy game when you know the mechanics, and it could do with more of a challenge. But I also know my personal style of play (slow, difficult expansion) may not be enjoyable to many of you, so I don't want to force it on anyone.
Essentially what it would do would be to impose penalties on the player and boost the AI: Fabricating claims and other ways of quick expansion would be more difficult, the AI would get bonuses, cheap loans and mercs, etc, to make up for its various deficencies in intelligence. Vassals would plot more and act more aggressively against the player, and the game would generally just be harder on you.
The question here is more whether such a module would be interesting to anyone besides myself, ie should I just keep it for my personal use or distribute it along with the mod?