Shameless bump + addition: so what you think it should be required in a new USM mod?
I start with: keeping the unique Saber design of famous npcs and associated quests (Visas, Mira I think are the only ones). maybe upscaling a bit the textures...
then adding the most famous sabers of the trilogu with custom on-off sounds. so it should be, more than a USM mod, a "Weapons of The Sith Lords" mod.