The first one to be recommended must be kr, the country of Kaiser Empire (no space in the middle). The original version of Iron Ambition tells that if Germany won the First World War without using unlimited submarines, it would establish a new world line of world order. This mod supplements many mechanisms that the original version lacks. Most countries have national policies and various events are also rich. The producers are also actively completing various settings. You can search kaiserreich for the official Chinese account, which contains some translated background stories. Highly recommended to play. And there are many related videos, and this mod is easy to understand (recommending Rambo's video without authorization).
The second module is eaw, the knight in the war and the history of the rebellion in Malaysia. It tells the story of the war between two pony states. I really don't play much, so I won't introduce myself. Can feel the producer's intention, has a unique technical tree and rich events, but it won't be too messy to play. Highly recommended.