As a side note, we've decided to keep the sheet of the survivor that sat in the throne so next time we come across it, that's who's swapping in. At 0 survival though.
This. Keep a folder and put the character sheet with a sticker that states "Statue Vault" written on it.
When you get the event swap the characters over, apply everything the event says but onto the old statue character. It is highly thematic and awesome, and you'll see characters transition from one campaign to another.