The practice of Imperium Rules stretched out over the eons.
They were there because the profits of the Imperium mattered more than all others.
If Legacies were poorly running their Existential Domains, other Legacies could observe this and undergo proper procedures to strip them of this right and take their Domain for themselves.
If they could convince the Imperium that as Rulers, they were better. That in the long run, they would take in more profit for the Imperium!
Thus, at times, representatives of the Imperium would stand in observance for Domains they deemed of some importance.
If they were shifting rulership in Legacies, they would be there.
It was just that…Al-Abalem never expected to be on the opposing end of a situation like this!
First, a Corrupted Seed rose that caused him to lose a great deal of his profits.
He was forced to utilize the Codex of Extremity as even now, its authority was being encroached upon evermore!