Wouldn't collapsing the prison planet structure free not only the unjustly imprisoned ISBEs but also the actual 'evil', 'perverted' ones as is often mentioned in Farsight videos? Maybe there is a good reason for having a prison like system if an ISBE cannot be destroyed. The ones causing trouble would need to be contained somehow.
On a side what does an ISBE actually do without a body, is there some purpose to that existent outside of the prison system. If the prison collapses what does an ISBE choose align itself with a particular 'species' of ET by entering one of their available bodies?
Good questions.
This could be quite the dilemma as there are those souls who would like to retain their power over others and continue their wicked ways, and to do that they need victims. If those types were freed to go forth and conquer the galaxy/universe it could be akin to releasing a virus which would spread and eventually infect the whole deal. Perhaps that is a good enough reason to quarantine this whole system and only those who make the effort, eg Lao Tzu types would 'qualify' to exit.
It is indicated that once outside a body we are not limited to space, time or size. There will be somewhere to call home which is individual for each soul. Some souls on planet may already know this, others are just finding their way through the maze and others are blissfully existing the best way they know how not knowing much at all.
Having no access to past memories, or perhaps a few fragments isn't enough to formulate an opinion or decision about ones future post death. If one finds themselves 'free' and outside the prison system, then it seems like it will be an excursion into getting to know oneself all over again, which might actually be fun, including the good, the bad and the ugly side of ourselves. Most certainly it will be one hell of a story being told to ones soul family and associates.
I doubt that the prison planet system is meant to "rehabilitate evil souls". We know for a fact that the bad alien souls are in power manipulating humanity and they're not subject to the prison planet system. They incarnate into and possess influential figures here without being subject to the same rules as everyone else. Even Lao Tzu and Buddha being so enlightened weren't able to escape the death trap without help from some alien friends, as RVed by Farsight.
What if all the negative ISBEs were removed from Earth, and only those with good intentions who truly want to stay could remain?
Earth is a stunning planet, and its only blemish comes from the self-serving actions of certain individuals.
Personally, I'd choose to stay. While I'd love to explore other worlds, there's something special about Earth that makes me want to keep calling it home.