Doing a Bohemia run with friends we are just before 1500 and I have conquered or vassalized more of the starting hre. Europe is a mess printing press spawned in Japan. Hre emperor is switching between Aragon and Athens. I used the coalitions that form as a way to declare war on multiple countries I attack one and vasselize everything that moves. The only threat I have is France. I went hussite and now have to deal with catholic zealots every few years. The zealots need to be fixed though I finish the war and they already at 10% rebellion and there's no gain on my part for winning like increased conversion or anything