Handle players running out of resources properly

[Shoshak]

Since the world has a fixed border, it may, however unlikely it may seem, run out of resources. The mitigations listed for that problem rely on statistical unlikeliness, which is not ideal. The problem needs to addressed with a sound solution.

[OlegSea]

I think if we want to solve this issue, we need to fully understand what it consists of. What resources people are going to run out of, exactly? I currently see:

• ores
• caves to search through
• functional structures that players would want to visit again and use for something (villages, outposts, etc)
• lootable structures that people might want to use again later (dungeons, mineshafts, nether fortresses, trial chambers, etc)
• purely loot structures (ancient cities, shipwrecks, buried treasures, etc)
• places to build
• stuff like clay, podzol, specific types of wood that can be farmed, but annoying for a new player to obtain if none is present naturally
  Anything else?