regarding number 4: "...after the current user is gone."



Reminds me of grave allocation in China (some have term limits):

"14. Disinterment and removal of human remains and ashes from exhumable lot on expiry of the term


(1) On the expiry of the term of an exhumable lot, the permittee of the lot must disinter the human remains and ashes buried in the lot and remove them from the lot.



https://www.elegislation.gov.hk/hk/cap1112A