So I'm thinking Thrawn's return will be yet another Disney production which will use the Imperial I/ANH style Star Destroyer CG model.
Although like Andor/Obi-Wan etc. it makes sense, unlike Rise of Skywalker which just re-used the CG model, increased it's side a bit and added a few cosmetic changes. Even if the fleet dates back to that time it still came off as incredibly lazy.