Currently, Shoulder Charge isn't consumed upon use unless it hits an enemy. The ability is about to become a 1 hit kill in the crucible in Forsaken, meaning once it hits an enemy, in all but the rarest cases, a kill is guaranteed. The Insurmountable Skullfort gives melee charge back immediately upon getting a kill with the melee ability. Basically, Titans rocking Shoulder Charge and Skullfort will ALWAYS have a melee charge in crucible, it'll be EXACTLY like D1 where Shoulder Charge could be used whenever and wherever. The instant this update goes live, I'm going to be carrying a shotgun with me at all times.