Yes i am new but please hear my suggestion.
Problem: world is getting destroyed.
Solution: make a resource world.
If you cut down trees you can replant them. But if you digg out sand in the middle of desert there is nothing to fix that. Same goes to packed ice, hardened clay, podzol. Just go /visit sand2 and you will see what i am talking about. For me, it's horrible. i don't even want to see mesa biome.
There is no easy solution for this. Just making new world and connect them together is not a simple solution. Some say it would ruin the economy on rare items everyone collected so far. I don't think it would affect economy that much. We would still have to gather resources. The problem is what we leave behind.
Maybe ban gathering of resources in the main world? (in a scale of visualy destroying certain areas)
What do you want more? To keep the value of blocks you collected so far or to walk through every single chunk on the server and enjoy the look of it?
Let me know what you think. Why is this suggestion good or bad for you?