Some leaders represented in the game never attained division command, and some never even attained brigade command. Having a way to prevent specific leaders from forming divisions would be very helpful, especially for modders.
There exist two values that can be set in a model file to prevent a leader from forming corps or armies: CanBeGHQStack and CanBeHQStack. Could another value be created to prevent division formation? If there is already a flag for that, I haven't been able to find a reference to it.