I think that something that should be in game adjustable should be the level of player control over the path of history. A historical accuracy slider would be just like a difficulty slider.
At the most accurate level, it would lock in the events that lead up to war, restrict divisions to historical makeup, and put greater limits on the choices allowed for ministers and maybe less control over the policy sliders, and perhaps even semi limited control over some build orders. This would make a good intro game, because the player doesn't have to look into things as much. The same rules would also apply to the A.I.
At least historical accuracy, events become much more random, alliances aren't certain, and players have full control over everything.
Perhaps this could even be split up into 2 sliders, event accuracy, and production accuracy.
At the most accurate level, it would lock in the events that lead up to war, restrict divisions to historical makeup, and put greater limits on the choices allowed for ministers and maybe less control over the policy sliders, and perhaps even semi limited control over some build orders. This would make a good intro game, because the player doesn't have to look into things as much. The same rules would also apply to the A.I.
At least historical accuracy, events become much more random, alliances aren't certain, and players have full control over everything.
Perhaps this could even be split up into 2 sliders, event accuracy, and production accuracy.