If anyone is interested, I have been tweaking the Outraged AI Attitude in my current game and I think I have an interesting balance, but I need help testing it as I tend to not go on massive conquering sprees.
My version of Outraged is based far more on Threat and Relative Strength rather than AE. Countries that are stronger than the target will generally not enter into a Coalition, if they are vastly larger they almost assuredly will not. Also, the further away the Target is the less likely a country is to enter into a Coalition.
I just recently added a block of HRE specific checks that make HRE states both more likely to join a coalition just as a baseline, but also more likely to join against people who own non-core HRe land. This goes doubly for Foreigners and Doubly for The Emperor Himself! In fact, HRE states are more likely to join Coalitions against Foreign Countries and the Emperor in general. Please pay attention to how this impacts Burgundy, because by the time I implemented it the inheritance event had already fired. I will be paying attention to how the states react to me being the Emperor. And pretty soon I'm going to see how they react to me annexing two Dutch Vassals....
Also I completely and totally stole the Ignore Attitude from Veritas et Fortitudo. Credit where its do, that is a very elegant way of creating a distant modifier.
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So far the effects have been interesting. England and Provence are in an effectively permanent Coalition against France, with me (Austria) being allied to both. The Ottomans haven't expanded much but even when they annexed three provinces from Byzantium they only got Hungary into a Coalition. Now Hungary has been beaten down and The Mameluks are alone in a Coalition against them. Sweden and The Hansa were in a Coalition against a massive Denmark for a while. Oh and when Serbia annexed Bosnia they got no Coalition, and even after taking a chunk of Croatia from both Hungary and Venice they didn't get a Coalition. All of their neighboring powers are too strong to need a Coalition (The Ottomans) or are focusing on The Ottomans (Hungary). Italian states? They didn't give a damn (well Venice probably did but I was occupying them completely and they were alone in a Coalition against me so they didn't really have any opportunity to do anything).