Random declarations of war! Especially on protectorates who are not even in the same theater as the belligerent. European nations declaring war on Louisiana, New Spain, or The 13 Colonies is just ridiculous. It is also ridiculous to be at war with half the world for no good reason other than random idiocy.

Non specific piracy on trade routs! What is this? A rout is blocked without anyone being on it? Usually the only way to clear it is to take some region. But you can only figure it out by guess work.

One port being blocked eliminating all trade to a nation or a theater even though there are several other ports available.

Undocumented changes! If you are going to change something at least tell us so and tell us how it works! The manual was slim enough but now even that little is becoming irrelevant.

I am sure there are more.

Anyone care to chime in here?