Again, they aren't YOUR trees. YOUR trees are only those within your safe zone. All other trees are free game. If someone comes along, cuts down a tree outside your border, and hauls the logs back to their camp, it is theirs. Get it? You aren't entitled to everything inside your safe zone and everything just outside it as well. The same applies for junk piles, grass, and anything else that is finite. When the developers code in a tree regrowth system or allow us to plant our own trees, things will be just fine. Until then, I suggest you grow a pair and take it to this so-called "griefer."
Cut down all the trees? Wrong. A homesteader named Krimara cut down a single, solitary tree, which you guys promptly cut into long logs and stored away in your resource area. So, if anything, Krimara helped you out. Other than that, none of the trees in your area were logged by Hopi. We don't play that way, sorry.
Great idea.