It just feels like an odd idea when the rest of your post talks about making it more like TCW, which is in 2.39:1 as well.
Most material made for television was made with 16:9 in mind, otherwise, it’s usually cropped for television. It’s more about what choices would have been made if The Mandalorian was produced at a certain time, hence the similarity to clone wars, but not like Clone Wars specifically.