1. Infamy accrued for giving provinces to allies in peace deals.
When I take command of a war started with a valid CB by an ally, that CB is not taken into account when determining the cost and infamy charge for taking the provinces. In addition, rather than charging the account of the nation receiving the provinces, the peace broker is given infamy!
This clearly needs to be rectified.
I can see why the overlord should take the infamy hit if the ally is also his vassal, but just an ally? No. Just no.
The problem with giving the lesser partner in an alliance infamy when they receive provinces is thus: It would be far, far too easy to "game".
Say I want to destroy England, as France. We're allied for now though. I go to war with Spain, England joins me. England, bless their hearts, does a lot of fighting and claims half of Spain. In the peace deal, I give them everything they took. This, however, puts them at, or over, the BB limit. They become Dishonorable Scum, and in a couple years, after destroying my relationship with them, I attack with the Dishonorable Scum CB, netting me a bajillion provinces for very little infamy / warscore.
I agree that the situation is stupid though. Perhaps offer it at a reduced infamy cost. Or split the infamy equally between the leader and the lesser partner. Or require the lesser partner to agree, and make the AI smart enough to realize what a destroyed reputation can do to them (actually, do the latter part of this suggestion regardless).
I like a lot of suggestions in this topic. Regency / family trees need to be reworked (ironically, aside from the rampant regency councils, the namesake of the expansion doesn't play much of a role). A filter for provincial decisions needs to be implemented... I tend to ignore them, for the most part, especially in large empires.
The CB system is spectacular, love it, but it really needs to be more forgiving for defenders, and needs to be redone for multiple enemies / allies. I declare Holy War on Tunisia... why does that also not apply to their allies, the Mamluks and Ottomans? It obviously wouldn't apply if an ally was France while I'm Sicily, so perhaps one CB should apply for everyone it's applicable to. For example, if France and Burgundy both own cores of mine and are both allied, if I declare war on France with the Reconquest CB, it should apply to Burgundy if they join in, for my cores that they own. But not to Naples, who also joins the war against me but has none of my cores.
For defenders, the Ottomans declare Holy War on me. Why then do I not receive that CB when I go for the peace deal? Or a similar CB, that lets me punish them for being so aggressive? Forcing them to concede defeat or pay me a couple hundred ducats just doesn't have the same impact.