Thanks for posting this Mike. I was having similar thoughts after Chris’s post but was nervous to voice them. The clarification is very helpful.
d is definitely an Optionlock – like you said, they tried the wrong option to disarm the bomb. (If instead the story was framed with their mistake being the initial story driver, so then they have one hour, it could be a Timelock.)
Now what about:
e) A bomb is about to go off. Twelve hours. The crew gets to work on how to disarm it. They find a way to add more time to the countdown through some procedure, giving them more time to disarm. (I think this is an Optionlock, and there might be some audience jerking around here too?)
f) An alien bomb with the capacity to destroy the universe is set to go off in one month. There are clues on how to disarm it but they will take years to decipher. The team puts the bomb on a spaceship which accelerates to close to the speed of light so that, due to relativistic effects, the bomb’s one-month timer lasts 50 years on Earth.
My guesses:
Timelock (50 years) - if the ship is set to come back in 50 years no matter what
Optionlock - if they can radio the ship to delay its return
Timelock (1 month) - if the protagonist is aboard the ship
You’d have to be careful not to jerk the audience around here too.