uh, i don't think it has anything really to do with "saving" the mempool.

This has been the conversation since at least middle of last year. Back then it was burn vs steal. Now it's freeze vs steal. I use the word confiscate instead of freeze because I think it's better to call it what it is.

I'm pretty much entirely in the camp of whoever has the keys has the coins, and so if someone is able to crack satoshi's keys, I guess they now get those coins. But, this argument about what the ability to derive satoshi's keys with a quantum computer does to mining incentives is worth thinking through.