So in a scenario with Farlander, push the limit, and advanced sensors, Keyan can do two actions and gain a stress prior to making his normal move. If Keyan pulls a green move then theoretically the stress is removed before he gets to use it later.

It's not really explicitly stated in the rulebook, but is stress removal a mandatory effect? Can you choose to not remove the stress after a green move?

Or in another case what happens if you "forget" to remove the stress? In most cases this would be bad, but with Keyan it is actually beneficial.

There is no "may" clause on page 7 of the rulebook, so you must remove the stress. If you accidentally forget, you should remove the token as soon as you realize your mistake. If you intentionally forget, you're cheating.

Yup. WW is right. You HAVE to remove stress.

Concur with the above. Nothing optional about it.

In the case of forgetting, assuming someone caught it later I'd treat it just like a focus that was accidentally left over from the previous turn, and correct the game state by removing the stress token.

I'm not so sure it's as cut and dry as all that. For example, if you were anyone but Keyan and forgot to remove a stress your opponent is well within his rights to prevent you from removing the stress at a later point since you "missed the opportunity" to remove it (obviously it would be unsporting, but by the rules). Now theoretically your opponent would also be able to "force" you to remove the stress, but there really isn't a rule that supports that (even though it seems logical).

It does get into the murky territory of mandatory effects and missed opportunities though. It is the similar reason to why swarm tactics needed to be changed. It was too easy to miss/forget and theoretically as a mandatory effect it required game state to be rewound to be put into effect. Both players could argue for and against whether it should be able to be done and not done simultaneously.

So in a round about way, making stress removal an optional effect of a green move resolves the need for any game state rewinding (ala swarm tactics) (though I fully accept that it is rather easy to correct the game state of having/not having stress, but that is beside the point).

Bear in mind this is purely a theoretical discussion, I wouldn't actually try any of this in game, but from a game design perspective it did highlight to me the point that removing a negative effect (I.e. Stress) should probably be an optional effect to avoid weird game state conflicts where both players have valid arguments (you missed your opportunity vs. I don't have a choice). "May" effects produce way less conflict than "must" effects.

The stress token serves as a reminder that the ship is stressed; forgetting to remove the token does not actually change the game state, since a mandatory effect took place. As per the rules, performing a green maneuver automatically unstresses the ship. There really isn't any wiggle room there.

Yeah, totally agree. I don't think it would fall under missed opportunities either, as it's not optional. You do a green maneuver and remove a stress token. There's no "may" there at all.

The whole "Missed Opportunities" thing is irrelevant. That clause only refers to things you have the option of doing. For example, if I fire from a B-wing with FCS, and I forget to acquire a Target Lock, that is a "Missed Opportunity". I may not later place the tokens, saying, "Oh, I intended to Target Lock that ship." If the thing in question is mandatory, you are required to correct the game state. If my ship has a Console Fire, and I forget to roll that Attack die at the beginning of the Combat Phase, I MUST still roll that. If that die kills my ship, any changes to the game state caused by that ship reverse as well (i.e. If my ship kills your ship, but my ship should have died before it had a chance to fire, then your ship comes back, as close to where it originally was as we ca manage).

Hang on, if you read the wording for adv sensors, it indicates that you can only perform one action when you use it. So really performing the one action negates the stress to begin with.

Hang on, if you read the wording for adv sensors, it indicates that you can only perform one action when you use it. So really performing the one action negates the stress to begin with.

You get one action from Advanced Sensors.

Having an action triggers Push the Limit, giving you a second action and a stress.

Ahh, will have to re-read PTL. I ruled that wrong last game... Ahh well, no harm done as I was only gimping my own list.