One Ahsoka theory sets up Grand Admiral Thrawn’s true intentions now that he’s returned home and how the Nightsisters might be involved. Grand Admiral Thrawn was one of the Empire’s most cunning and successful tacticians, tearing his enemies apart left and right. If it weren’t for Star Wars Rebels’ Ghost crew and the Jedi Ezra Bridger, in particular, Thrawn would have gone on to create more havoc and misery, and the war between the Rebellion and the Empire might have ended very differently. For years, he’s been biding his time in a secondary galaxy, waiting for the moment he could finally return home and restore the Empire to its former glory. But is that really his plan?
https://screenrant.com/star-wars-grand-admiral-thrawn-imperial-civil-war-nightsisters-plan/