Well, I just tested CE. The arc of an ADD6 on a ship is irrelevant. I tried "ALL", "RH", "3", "1", and "0". The Antidrone Device always gets 2 reloads. The RH arc was not enforced, although the MFD displayed the 180 degree arc. I also removed the entry in the ADD_6 column. It made no difference -- I think it's no longer referenced.
Mine-laying shuttles might be a quirk found only in EAW. Going to download EAW now.