increasing the radius depending on Rank ?....
Allowing an officer to Rally, remove pin markers, from friendly units ?
Yeah, using rules from other games would be the way to go with improving officers, so agree with morale radius increase ... maybe 6"/12"/18" for the ranks?
Certainly agree with the rally upgrade ... "Rally Troops" ... d3 roll (not as high as d6 "Rally" if focus on own/other single unit?) for each unit in radius and line of sight?