I'm Tired is an AI mod that adds an element of strategy to the game. You can now set your marching soldiers up for rest.

When you're out in the open, you'll get a 90% rest bonus. If you're out in the open, you'll also get a freebie every other time you would have gotten a penalty.

Note that when you sleep outdoors, you will only get 90% of the time towards rest. But if you sleep in a settlement, your rest will be increased by 25%.

The more to balance the game mechanics between the AI and player, the better the game will be IMO.