The Sith Eternals had a bird's-eye view of the galaxy after the fall of the Empire in preparing the First Order plan. I secretly watched the citizens relieved that the emperor had died and the empire was destroyed. We will collect and analyze all kinds of information and clarify the weaknesses of the New Republic in order to make the First Order plan a success.
Astonishing information is brought to the Sith Eternal and used in the First Order plan. Information on the survival of Grand Admiral Thrawn is one of them. The Sith Eternals likely knew Grand Admiral Thrawn, but they never imagined he was alive.
He keeps a close eye on Thrawn's objectives and strategies, and considers whether they can be used to interfere with the First Order plan. A calculating and brilliant strategist, Grand Admiral Thrawn will probably want to gather the remnants of the Empire. But if he reveals the Empire's revival, he's violating the truce between the Empire and the New Republic. He is hesitant to act in secret.
Rumors of Grand Admiral Thrawn's actions spread to Ahsoka.
At this point, he can't incorporate Thrawn into any First Order projects he wants to keep secret.
Instead, the Sith Eternals reference the vulnerable dictator Snoke they are creating. Is a decentralized system possible for Snoke? Is a dictator-independent system possible? Is it really possible to carry out the plan in secret? Is Efficient Decimal Rule Possible?
Perhaps Grand Admiral Thrawn will not be able to command the Empire as he used to. He's heavily underarmed and a really vulnerable remnant. Thrawn is accustomed to the vast resources of the empire's prime, so he will find it difficult to use scarce resources efficiently and decentralize governance. He can't even use his former empire's assets.
Grand Admiral Thrawn's ultimate goal is to reign as the Second Emperor.
However, it is outdated to maintain a centralized system and rely on the emperor to establish a dictatorship as before.
Thrawn would never have guessed that the Sith Eternals were committed to creating a vulnerable dictator. If Thrawn finds out about the First Order plan, things will get complicated.
And watch how the New Republic reacts to Grand Admiral Thrawn, dealing with, and confronting. There will be a lot to learn about the actual situation of the capital and the deployment of the army that does not depend on Coruscant. When weaknesses or vulnerabilities are identified, they are used for first order planning.
Thrawn is a brilliant strategist by nature, and he reveals more weaknesses and vulnerabilities than anyone else.
Thrawn was also aspiring to the throne, and he was dissatisfied with the emperor. After the emperor's death, he would tell his men. If you ask the First Order personnel, there is nothing more convenient than this. He helps with First Order planning. A system that relies on the emperor alone is fragile, and the empire's system is inefficient and unresponsive. And the inside of the empire was exhausted to maintain the system.
One might even argue that an all-human system is bad (Sloan is Chiss)
As a result, it enables the efficient invasion of the First Order plan.
* The Emperor was wary of Thrawn during his lifetime. He felt he was trying to get his spot.
He kept his distance from Thrawn and gave his authority cautiously. He felt that the Chiss race was superior to humans. The Emperor's death was convenient for Thrawn, but he couldn't imagine that the Emperor had faked his death. Not even Thrawn knew of Exegol's existence.
Exegol is the Emperor and Vader's Secret (Wayfinder)
*While letting Thrawn go public, the First Order plan will be carried out behind the scenes. Going unnoticed by Thrawn is consistent with carrying out the First Order project in secret.
Knowing what Thrawn knows will help us to know if the New Republic is aware of the First Order.