Eh, I don’t really want to trim Leia any further. Nor to revise the nav tower plot element. It’s not great, but I’d rather keep the fragile nuances in place to the degree they are in the theatrical.

I know it’d take far too much work to actually change her wardrobe throughout the movie. It would be much more doable to merely tackle the ending scene. However, it really wouldn’t make sense to give her dark clothing there. If anything, I’d expect this to be her final goodbye to the old ways before changing her outfit as she ventures out into her new journey. I guess it’s a “could, but probably shouldn’t” thing.