:O Very detailed and well-written review. Thanks for writing and sharing it!
I noticed in your video that things were transitioning to lower levels of details (including disappearing) when relatively close to the camera. Do you still experience that with the latest version? Theoretically, that should have been fixed in version 2.2.5. So, I'd just like to be sure that it was, indeed, fixed.
There are some super secret hidden things. But, they're just more Easter eggs. There are also some world building mini-scenes somewhat hidden around the hub featuring semi-sapient mushrooms :P