They got so many traitors, they're gonna need to recycle the gas! Jumping Jack Flash? Or perhaps some sort of centipede?
kek, "what's in the box??!?" picrel.
Bolt gun: only expense is the electricity! Well, and the guy to man it. And, it'd be more difficult to "randomize the trigger puller" so, there's an argument against (even though I really like the idea).
Thinking further, why is it important for "the executioner not to know whether he actually killed"? Reminds me of second picrel on priests.
COMPLETELY agree though, everything should be public! Including the flag-draped coffins, although after seeing the coffin at the White House, perhaps we're pulling out for good?