Welcome to alpha High Fidelity.
Yes, the ability for a zone to hide what is inside it was reported over a year ago.
LOD support for entities was asked almost 2 years ago.
There are a myriad problems, bugs, and missing features that we alphas found, reported, and are in the B pile. The A pile is where the shinies work, the work specifically for VR, system scaling and other business interests are kept. That is where the Haikru is focused - the A pile.
LOD and zone privacy is in the B pile. We just have to wait a long while. Here’s a book to read while waiting: