The code for the Iberian wars is... rather strange. It works fine in some regards but figuring everything out has been a challenge.
Aside from that, here are some changes I made.
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Portugal gets taken over by monarchists before the wars get started proper. They remain the Estado Novo if the Iberian Divorce happens, but I have not added content for the that.
Iberian divorce is redundant anyway
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Socialist tags work differently from other contenders. First off, I changed the code so that they can actually unify Iberia (Austurias and CNT* were considered separatists for some reason). I made it so that they also don't attack each other, and they win if only socialist tags are remaining. At this point they all get merged into one tag, but there isn't any post-war content for that. Socialist tags start off much smaller to counterbalance their alliance.
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Speaking of winners, factions have proper names after they take over. Here's the Falangist's, but there are others as well.
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Here's the ETA coup tree if they takeover the Basque Republic
Finally, I made it so that iberian war contenders can attack separatists regardless of war exhaustion. Otherwise there were situations where tags were softlocked out of finishing the wars. As of now, I am trying to figure out why Madrid is impossible to take as long as there's a division on it.
*Well, I do know why for CNT. To my understanding they were always supposed to be just Greater Catalonia, but what's the fun in that? That and CNT also breaks other tags if they survive as a splinter. It's weird how they didn't get content on release despite being one of Pacifica's project's.