Currently, Combat Efficiency ranges from 1 to 6. My suggestion is to introduce a level 7 — but with a twist: Combat Efficiency 7 can only be set manually by the player and not by the game AI.

This would be useful in scenarios where multiple countries are at war and several of them are automatically set to level 6. When that happens, even the most powerful country can't gain a real advantage, which can be frustrating for the player.

Right now, if I want to give one country an edge, I have to reduce other countries' efficiency to 5. But that often causes the AI to rebalance the war, sometimes unintentionally boosting other countries — which defeats the purpose of trying to make just one country stand out.

With the addition of level 7 as a player-only setting, it would be possible to give a specific country a clear upper hand, without the AI counteracting it. This allows for more control, storytelling, or scenario customization, especially in modding or sandbox play.