Again - we are using Only War mainly for our Rogue Trader combat rules and we came up with problem with MIU. Again this would probably go to Only War but since Its more related to ROgue Trader i like to how other GM:s and players have dealt with this.
I dont have the only war book now with me but was it that common MIU gave +10 to tech use, operate (voidship, pilot spacecraft etc etc) and drive ground vehicle etc
I am not against it giving +10 with tanks and smaller crafts. But it giving bonus to voidships feels somewhat "not as epic" for its rarity being so low (was it rare or scarce ?)
Think about - if there would be one single (was it rare) item to give better control the ship would not EVERY captain get one. Again i am not against this if others have played with this giving +10 to operate (voidship) or whatever.
I am gonna give to the same gear to every other NPC ships pilot the same gear. This would mean benefits to enemies allso (would run away faster etc) Why ? - cos the implant is pretty cheap and usefull so would not every captain give this to ships pilot.