Blobs! Blobs everywhere!
It's the year 1558 and I'm playing as Austria in this one, and am one decision away from forming the Holy Roman Empire. My original plan was to wait for the 1600s to do that but the formation of Great Britain in 1450 and Russia in the 1490s necessitated a hastening of my plans. I've won a couple of wars against Russia already, though they were mostly just to get the IA required to Revoke the Privilegia, but Britain is just becoming a monolith of doomstacks and foreign conquests. I've got into a couple of scraps with them and managed to do pretty awesome in one of them but every time I try to free Aragon or the likes they just wait a year or so so that my armies are back defending my provinces and march in to re-annex the place. Doesn't help that they managed to core most of Aragon's provinces before I had the power to attack places like Iberia. France/Burgundy were hold ups too but I've managed to effectively wipe them out and vassalise the eastern French minors.
It's just the first game I've played (especially as a HRE nation) where the blobs are actually overtaking me rather than lagging behind as I gobble up the HRE minors.