Anbennar is like half of my EU4 games. It's like getting a second vanilla quality game.
My favorite part is it plays just like the original. You have the same 4 ages that start at the same time and affect the world in the same way, but perfectly coated into the lore. You have the EOA as the HRE, a reformation, the religion war, colonization, natives, missions, reformables, great looking province borders etc.

Usually a mod will be lacking somewhere, and it can be really distracting for me, but Anbennar is really amazing. I can't wait for the new gnoll region because I expect it may allow Western Cannor to start the whole Africa trade mechanics.

I've been hoping for some kind of lich influenced land of the dead area but it looks like they're running out of space now.