Is your feature request related to a problem? Please describe.
If you die and haven't changed your spawnpoint using a bed you always respawn at the same position. This becomes bad if you destroy your spawn island to move it lower in the world causing you to always drop down with the potential to be stuck in a death loop.

Describe the solution you'd like
It would be nice to have a system in place which checks if the normal spawn point is secure and if not it spawns you at the next best location.

Describe alternatives you've considered
Maybe grant a resistance effect after death but that wouldn't solve the issue if there are no blocks below to fall on.