This is a suggestion for ROP, but actually it applies to all AGEOD games.
In all AGEOD games, there is the issue with spamming light "invisible" units to seize Military Control all over the place. In AJE, while a player has less units to play with, the abysmal detection of the Roman (max : 3) can make such units completely invisible on any terrain.
My suggestion would be to add one in Detect to ALL land units in the game (in all games, even), but to make "having a leader" a factor that adds one to the Hide of ANY stack. Units (partisans) that are supposed to work "on their own" can have one hide bonus without leader.
Thus, if someone wants to have his "invisible MC force", he will have to sacrifice a leader to do it.
Any opinion ?