Karl made himself comfortable as he began the work of editing the whole Tiny World without causing anything to destabilize.
He knew that the normal way would be to completely reset the Tiny World spell and reconstruct it from scratch, but there was so much in here, so many living things, and not just the people, that it simply wasn't practical.
If he could make a second space and then move everyone, it would be a different story, but as things stood, many of the plants wouldn't even survive outside of the Tiny World, and they would take forever to transplant into the Beast Space, even if they could find space for them.
They probably could, as the spaces expanded so much at Immortal Rank.
But that was not the point.
The first part of the process, imbuing more of the Fundamental rules into the space, was easy.
