I have basically everything worth having for HOI3, but I haven't updated EU4 or CK2 in a long time and was wondering if there are any decent things for them.
Just to give an indication as to how long they have gone updated - my last CK2 expansion [I think] was Charlemagne, which was released in 2014. I have a GoT mod for it but the game always crashes on start up when I try to run it.
There's a cool expansion for EU4, named Voltaire's Nightmare iirc. It changes the whole world to just the HRE but way more complex with tons of new mechanics.