Issues related to patch 1.4 and the dlc.
I think the patch improves the game and solves many pre-existing problems in elegant and interesting ways. There are some issues that might be reasonably addressed in a hotfix.
1 - cardinals, your colonial minors get their own cardinals that support you in the curia. This went unnoticed with vassals, but now becomes an issue since the large catholic colonizers don't get their provinces directly.
2 - conquering indians, the idea of protectorates and that they don't grant colonization range is good, makes sense, however, conquer 5 indian minors in a region and you establish the colonial minor, the colonial minor gives you range. I'd suggest that establishing a colonial minor would require primary culture provinces, and that primary culture provinces get added to the minor. Right now you can sail an army to mexico, conquer the aztecs and all of a sudden you have colonial range everywhere and all the mexico provinces have been cored. This colonial minor gets Aztec culture accepted immediately. Previously you could vassalize or annex release the aztecs, they just didn't provide colonial range until they reached a certain technology.
3 - colonial minor administration, I don't think that colonial minors should have different religions and/or different accepted cultures as their overlord. As long as the colonial master assigns governors it should be picking state religion and accepted culture.
4 - nerfs, timely nerfs were done on russia, prussia and sweden. prussia could do with a bit more nerf, I'd suggest some sort of triggered modifier which gave it full prussian ideas with a 6 mil monarch, scaling down for lesser monarchs, with 0 mil monarchs giving 10% bonuses to morale, infantry combat and discipline. But, for the love of god WHY DID YOU NOT NERF GHAZI?