As you already know, Earth is locked as a prison and there is quite more to Earth before reaching the prison walls, so to say, than our incarnated plane.
Actually, as mentioned several times there are more Is-Bes (keeping with the same terminology) waiting to reincarnate here than incarnated and they are not just sitting in wait. There have been several depictions of cities in such planes, from dense planes full of darkness to better planes of all kinds and, most importantly, all within Earth's prison walls. I say most importantly because then it is easy to see that the stable cities of this kind would be of interest to use as outposts by extra-terrestrial groups interested in the human population here.
A notorious depiction has even been elevated into a movie production, the "Astral City: A Spiritual Journey (2010)" movie made based on the first book of a series.
Hence I propose a project to study these planes, their respective cities and their interaction with us incarnated humans and the extra-terrestrials.
I just watched the movie Astral City. That movie, as well as the American movie, Defending Your Life (Al Brooks & Meryl Streep), have both been incredibly influencial in my life. I was raised Roman Catholic (RC), like many of us here. I'm aware of the faults of the religion, as I studied the history and confirmed that many practices were adopted from older dieties. I still love everyone in the RC church, and I befriended many priests and nuns. They're all doing their best and live according to what they were tought. I always felt that the RC version of "WHY we exist at all" to be very lacking, defaulting to "lack of faith" as the cause of such a question. Stories like the ones mentioned above are very comforting to me. But it can all be part of the trap.
Both of the above mentioned movies were so impactful to me because it seems too familiar. In Defending Your Life, the main character dies and goes to Purgatory, where he has an acuser and a defender. The people that do good deeds and sacrifice for others go up to Heaven. The people that live a life of fear and hesitation get reincarnated. A few months ago, I hear Yeme talking to an NHI about where they would prefer to live if they had to be on Earth. Their response was, not anywhere on the surface! The NHI said they would choose to live in one of the sky cities.
I think PHSC has a really good point. I would love to know more about these SKY Cities, as I think I may be from one. It doesn't sound like part of the Death Trap. However, the memory wipes seem highly questionable. Who are these people in the sky cities? Are they part of the death trap that involves memory wipes prior to reincarnating? Or are they part of a RESCUE TEAM reincarnating to help rescue their loved ones from the Prison Planet, and the memory wipes are necessary in order to maintain sanity while waiting to live long enough to complete the freedom mission, and they're picked up as soon as they die by their loved ones who escort them back to the Sky Cities where their memories are recovered?
Please take the time to consider deep diving into these Sky City Is-Be populations.