Honestly, I wouldn't add anything to it. It is simple, clean, and has a smooth tech appeal to it. Honestly, all lightsabers are "flashlights" that can cut through most solid substances when you think about it.
Perhaps buy some emitters to swap out occasionally.
Yeah, I really like it as it is. A nice clean shape, and the Silver and blue goes really well together. I'd probably put a War Glaive emitter on it though, with the claws removed.