Well, this may be the right time to mention that I'm not exactly convinced of planning or even a fan of planning. I'm more into creating opportunities and exploiting the same with cat-like reactions.

The force densities and the mobility of a well-organized and well-trained battalion exceed the horizon of a divisional headquarters anyway. To restrict brigades to Div Cmd and to lead a corps operation by issuing orders to two or three divisions isn't going to work well any more any way.

Such a mode adds too many restrictions, too many delays, too much friction ... let's just mention that it's a bad idea. The time of the division has passed away. it has actually passed away back in the 50's when NATO planned to defend a 1,000 km front-line in Central Europe with basically only 26 divisions instead of having 100-400 divisions on a 1,000 km front-line as Europe experienced it a few years earlier. The wide frontages required a mobility and agility which simply didn't fit into the division corset.

West Germany would have introduced a brigade-centric army without divisions based on late war experiences in the 50's, but didn't for entirely political reasons: The government had promised 12 "divisions" to Western Allies.

That's how outdated the division actually is.