I dont know if this idea has been touted before so i will posit it anyway.
Me and one of my opponents have been playing Operations with a major restriction.
Deployment is only allowed at the start of the first battle, there is no re-deployment allowed at the start of the remaining battles.
All units at the start of the new battle must remain in the same positions they finished the previous battle.
The only exception to this rule is where units that lose their position due to nuances of the game at the start of a new battle can be moved into their correct positions.
Reinforcements that come on can be placed anywhere on the map edge in a tactically relevant place to the on board friendly forces.
This is allowable as any reinforcements theoretically should have some warning about the enemies positions as a result of the fighting done by the friendly units that have fought before the reinforcements arrived.
(This eliminates an opponent camping on road exits to ambush what should be a forewarned reinforce unit)
This rule significantly changes the way operations are played for the better and in my mind removes the unrealistic "teleportation" of units around the map that an un restricted re-deployment system allows.
Consequently, especially in large operations, safe withdrawal procedures will be needed and terrain features like hills will play a more significant role if they overlook possible enemy reinforcement roads for example.
It also impinges on the positioning of MGs and field guns, especially if there is limited or no transport vehicles available.
Try it and post your comments be they fair or foul.