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It would be possible to do it, but the mechanism is different, so it wouldn't be just a matter of a small change to the existing governance expiry code, entirely new code would need to be written.

If we could have that it would help us in the anti-abuse community to insure that dead people or lost keys don't go on indefinitely.

I was hoping for a simple if delegation days >/= 365 then ignore but that would be too easy, I guess.