Seems to me there is a good case for RIBs with a few stabilised M134s and same for some .50 cals, as everything goes better with a 50. Intermediate range threats such as 155's are a counter battery target, but today, that needs to be done by standoff, or loitering munitions operating up to the limit range of the 155s with base bleed.
Who would they be a threat to?
I do love a 50 shoot, it’s a great fall sport as money has to be spent before the next fiscal year.