Instead of Thrawn and Ezra returning to the Star Wars galaxy, is there any chance our heroes from Ahsoka end up in the other galaxy? And just… stay there? And that's how we get around/"ignore" the sequels? We simply start new adventures, in a new galaxy, with eventual new characters?
Otherwise, seeing as Ahsoka & co aren't around for the sequels (that we know of), if they stay in the Star Wars galaxy, they presumably die before the events of The Force Awakens, and do fans really want to watch another story, a la Rogue One, where our heroes die just before the events of another saga trilogy?