Our planning system was dynamite when we first put it in. The thinking was fresh; the form mattered little. It was idea oriented. We then hired a head of planning, and he hired two vice presidents, and then he hired a planner; and the books got thicker, and the printing more sophisticated, and the covers got harder, and the drawings got better.
Compromise is usually bad. It should be a last resort. If two departments or divisions have a problem they can't solve and it comes up to you, listen to both sides and then pick one or the other. This places solid accountability on the winner to make it work. Condition your people to avoid compromise.