Abandoned Bases in Hardcore

When in Hardcore mode in minecraft java, when you die the world is deleted. Your base will be lost to history. But this idea makes it so there will be a button in the menu for creating a new world that states "Use already existing seed". when clicking it and generating your world, a random existing seed will be picked, you'll be spawned in different areas in that world. When someone dies in that world, their structure will be preserved in the state it's in. So if you die, your base is safe.