I find that mod to be extremely useful. Not only does it prolong the duration of Bastille and Vortex, it also does not change the range of Vortex, and the size reduction to Bastille is advantageous in ODD as it keeps trapped enemies from being scattered all over the place - one rocket does the trick.
Does anyone really go for power range on Vauban? Maybe as a panic button in Survival to lock down a large area? Or for Tesla related tactics or something? I want to know if there is a point in not using Narrow-Minded.