Like I said, it's a bit of a waste of people's time, but let me be nice and waste my time.
Let's say everyone does this. Attack happens. Everyone now publishes their tx. The first thing that happens is congestion. You don't know what the fee in the future will be especially during congestion. So now you're going to have to do p2a and sign a child tx too in the same go, with the right fee. This means that you have to have at least the anchor device on you, and that needs to be not vulnerable to whatever is going on.
Now, if you're going to have a presigned tx to a place that you carry on you, and a means to trigger said presigned tx, then you still have everything on you and your entire stack is hot. If you presign p2a to a third device with only the anchor on you (see how complicated this is getting?) then now you:
Have to secure 3 devices.
Always carry 1 on you.
Still have an alertness issue.
Any reactive measure in a key compromise scenario is vulnerable to mempool trickery - just because this attacker was dumb doesn't mean that the next one won't be patient, monitor, RBF race you to 0 (all they can lose is your money, all you can lose is your money) and so on.
Can be painful with reorgs too. Remember, we'll have 2 chaintips next week, at least for a while. A great attacker times the attack well (this was poor timing, poor execution too.)
Every other victim is your enemy when this happens, because you'll be competing for a chance to save your stack.
This is why, I think that sure you can do this, but it is not in your interest to standardize it, because it doesn't scale.
PS: it's a bit rich to within 24h complain about LARP and then do it yourself and ask for more LARP.
Like I said, it's a bit of a waste of people's time, but let me be nice and waste my time.
Let's say everyone does this. Attack happens. Everyone now publishes their tx. The first thing that happens is congestion. You don't know what the fee in the future will be especially during congestion. So now you're going to have to do p2a and sign a child tx too in the same go, with the right fee. This means that you have to have at least the anchor device on you, and that needs to be not vulnerable to whatever is going on.
Now, if you're going to have a presigned tx to a place that you carry on you, and a means to trigger said presigned tx, then you still have everything on you and your entire stack is hot. If you presign p2a to a third device with only the anchor on you (see how complicated this is getting?) then now you:
This is why, I think that sure you can do this, but it is not in your interest to standardize it, because it doesn't scale.
PS: it's a bit rich to within 24h complain about LARP and then do it yourself and ask for more LARP.