I really like the Imperial Fists and I play an IF Tactical Marine with focus on leadership at the moment. The only thing that bothers me is the Defensive Stance of the Chapter and to a lesser degree the PsyPower Noble Praetorian.
If I understand right, if I use this Stance, the whole Squad gets immune to fear, as long as they defend the nominated terrain piece. It costs 3 Cohesion and can be sustained. If I interpret the living errata correctly I have to pay once for the Stance and then can use it freely for the entire mission.
The only effect Fear has is the loss of Cohesion. That means the only mission, were Hold at all Cost is useful, is a mission with lots of fear causing enemies, so that I pay once the 3 Cohesion and suffer no further losses o cohesion throughout the mission, as I can always reactivate the Defensive Stance.
Is this assessment correct?