Regenerating and changing terrain

Especially Vanilla Servers suffer from Creeper explosions / Dynamite, but also from excessive diamond shovel usage. My biggest concern is that dirt and sand, but also gravel and stone, as well as lava, do not regenerate. Here are the ideas for regeneration of these block types:

Dirt:

Surface level dirt regeneration would start during rain: Rain would enforce growth of small plants (for example those we can harvest the first seeds from), or, when there already is a plant, let it rot and become a dirt block. This would only happen under the height level defined as surface level by the world seed, so we would not grow large mountains where there have not been any before. This way, creeper holes / Dirt collection would automatically fill with time, without forcing the player to use dirt he has to collect elsewhere. For this method would only work on existing dirt blocks, but not on stone/granite/diorite/andersite, these blocks could become dirt blocks, to later allow regrowth of grass -> plants -> dirt over them. Of course, this is not always wished by the player. There could be implemented a certain method of disabling this kind of regeneration, for example with a certain block (I suggest coarse dirt) being present anywhere inside a chunk.

Sand:

Sandstorms could recover sand in deserts and mesa biomes, waves could regenerate sand at coasts.

Sandstorms have already been described in the post:

https://feedback.minecraft.net/hc/en-us/community/posts/360010571651-Sandstorms

The current post is only regarding terrain regeneration itself. Mentioning the sandstorm is just an example.

Gravel, stone and cobblestone:

Could be regenerated underground during earthquakes: in a cave, the ceiling of a cave out of stone could become cobblestone. Another earthquake (or one longer earthquake), and the cobblestone ceiling could turn into gravel ceiling, and fall down. This could only be hindered if a wood planks block is present withing a 9*9 radius (like in mineshafts). If this happens several times (over a looong minecraft time, several minecraft ingame years), there would be multiple layers of gravel on top of each other. Once 6 layers of gravel are present, the bottom layer has a chance to turn to stone again.

This should only happen within a small area around the player (1 chunk in each direction)

Earthquakes have already been described in following post:

https://feedback.minecraft.net/hc/en-us/community/posts/360009230452-Natural-Disasters

The current post is only regarding terrain regeneration itself. Mentioning the earthquake is just an example.

- Edit: for my "splitting of the subjects" (Sand / Dirt / Cobble+gravel+stone) apparently was not liked (exept for this post, they were deleted without comment), I have bundeled them in this post again. -