I mostly agree, but after the release of All Under Heaven I do think that Western Europe needs a big overhaul sooner rather than later. A single large DLC could feasibly tackle Britain, France, Crusades, and Religion (with Investiture/Antipope mechanics). Those should all be orange.
AI improvements and an end to modifier stacking should be free patch changes.
Not just a big DLC, more like a whole chapter.
Small expansion for England and France, 100 years war, dynastic conflicts, vassal interactions, etc.
Big expansion for religion in general.
Crusades and great holy wars, head of faith interactions, heresies, change the build-a-faith mechanic, etc.
5€ DLC for whatever they feel like cutting out from the other two and bundling in the chapter.
Britain could use a struggle like how Iberia got one. A struggle between the Norse, Anglo-Saxons, and Celts.
The more ''Struggles'' are incorporated into the map, the worse and worse it makes Iberia look like.
I understand why Iberia got the struggle in the first place.
Islam arrived to Spain in 711, a century before the start of the game, and it was still an issue in the XVI century, more than a century after the end of the game.
The Iranian intermezzo lasts for a century and the Norse-Anglosaxon conflict was kind of over in 150 years.
I don't know, I feel like Iberia will suffer from feature creep and will need its struggle tweaked and refined in the future.