Of course, Uchiha Tamaharu wasn't going to screw them over. He gave them two choices.
Those who wanted their houses and properties back could give up the chance to live in the Living World and move to one of the other two worlds instead. Their memories would be read through genjutsu to verify their property claims, and they would receive an equivalent amount of property in the other world so they could start over.
The other choice was to stay. They would be assigned new homes, but that would take time, and they would have to start over from scratch, with none of their former property rights.
He also told them that life in the Living World was different from life in the other two worlds. People could cultivate much faster here and live longer, too.
That was a fundamental difference. Not just anyone could extend their lifespan.
Aside from those who genuinely didn't want to fight, everyone else would surely try to find a way to stay.
As for the souls from the Soul Society, they were handled as before and reincarnated—that is, transformed into pure, life-filled Reishi.
Every soul was treated this way, except those of the Death Gods.
Three years had only been enough to stabilize the Living World. Uchiha Tamaharu had also expanded it to one and a half times its previous size.
But too much of the land was still desolate, and it all needed to be rebuilt. People would be paid in a new currency for this work, which they could use to buy all kinds of supplies.
The cultivation system was based primarily on Quincy abilities, with Kido incorporated into it.
The old Zanpakuto had disintegrated when the Soul King Ichigo disappeared. But the Death Gods had also gained some of the same