What rev did wrong and how to fix it (maybe).

[Captain_Bravo]

Concerning your "Notice the implant failed", what if they just make it so you can see if someone has been implanted? Like, that's what the "I" stands for? Maybe a special pair of sunglasses for spymasters that has metal detectors built in or something? It would keep you from (accidentally) implanting other dudes dudes, give you a big warning when someone who you didn't implant shows up with the "I" over his head, still allow other spymasters to retain the element of surprise if they get implanted and it doesn't take, plus security could stage raids and double agents by putting a loyalty implant in people, since it doesn't tell you what kind of implant someone has.

Maybe give a pair of those glasses to the HoS too? So, if a traitor implants the captain, he can just shrug it off with "Oh, I have a machine-translator", but if the HoS sees 25 dudes walking around with implants, he knows something's up?