"However - that plane is not really intended for day-to-day use"
Agree. The B2 is not something that is going to be risked on everyday tactical air support missions. B1 and B-52s are what is typically employed in that role, if the lighter stuff is not enough.
That's an interesting feature you mention here.
May I go as far as asking if it is planned/possible to link that "frightner" shot to SAM unit experience/morale? The idea being that a green/panicky crew would be more likely to fire away even if they have nil chance of hitting.