Never called it a panacea, or even said it was a change that needed to be made. Just saying that's the only thing that could be clarified to change this behavior without rewriting either ability.

You seem to be thinking of Xwing in a "stack" system that is present in game like Magic. Stacks go one at a time as stated here

http://mtgsalvation.gamepedia.com/Stack

But Xwing doesn't use a stack, they don't resolve one at a time in that traditional sense. Simultaneously occurring events pool together and allow a player with initiative to pull from the pool until the pool is empty, as shown in the earlier example of effects like PTL and EI, or Kanan crew's interaction with Debris.

CheapCreep it is you who is bending the rules based on your adamant feelings. In your own response you admit that TLT are 2 separate attacks. That means if you miss the first attack you have to decide to trigger gunner or not. If not then make the second attack with TLT, if that one misses, again you can trigger gunner since you did not after the first TLT shot. Skipping the declare target step does not bridge them as if they are one attack. Again by your own admission tactician triggers twice because TLT are 2 separate attacks. Gunners wording immediate means if you miss the first TLT attack you have to decide right then and there if you wish to trigger gunner or go on to the second TLT attack.

If you choose to skip Gunner's shot, it's a missed opportunity that you do not get back. As soon as you declare TLT's second shot, you've started a new attack, meaning you've lost anything that triggered from the first attack -- it's all done.

This isn't new, nothing has changed, move along, move along.

My take on it is, there are a number of abilities that can apply after a trigger, and if they all have the same timing then you can choose which order to apply them.

However, that does not stop an ability invalidating another ability, either by explicitly stating it like gunner saying no more attacks may be performed this turn, or by changing the game state like the second TLT shot hitting, which means gunner is no longer immediately after an attack that missed.

Valen is just another ability that triggers immediately after an attack and may or may not invalidate the second TLT shot or Gunner by changing the game state.

The sticking point for me for gunner TLT argument is that the immediately ability for TLT is a new and separate attack.

FFG made a bad FAQ and they should feel bad.

Since this mostly ended up being a rules discussion, I started a thread in the Rules Questions forum to try to work through it in more detail.