Of course, the main reason is that this Crystal Wall Universe won't last much longer—it will be devoured by him in a thousand years.
More precisely, in five to six hundred years, the entire Crystal Wall will start to shrink and collapse due to his consumption, the Will of the Crystal Wall and Origin Force being devoured. Chaos will ensue in the world's rules, and the world will fall into apocalypse. At that time, most of the other medium and small planes will be destroyed, leaving only the central Main World that can hold out a little longer until it collapses along with the entire Crystal Wall System.
Is it worth it to spend a great deal to change the existing rules of a world doomed to destruction?
However, if no change is made, seeing a dozen or so planes of varying sizes lying before him, unused for at least the next five hundred years, seems like a tremendous waste.
