I thought the same thing... there are so many recycled elements and tropes being used

One of the things that is at once amusing and annoying is that they're really trying to get all they can in with fan service in the gaps of Star Wars history instead of moving forward: ie having Obi Wan fight Vader in his series really changes the dynamic of their encounter in A New Hope and kind of makes it seem weird that it played out the way it did

We know Thrawn technically can't be a recurring villain or even have that much of an impact on the universe since he's not even mentioned in the newest trilogy just like we knew that Obi Wan and Vader's fight would not affect anything in the least. Nothing of note can happen since all of these stories are being shoehorned into the middle of the continuity