I've been considering a heavy gauge wire wrap for the handle portion. I think the bare copper color would be cool on either a light or dark hilt and it only looks better the more handling it receives. I think that would be a good idea for this hilt design.
This 'saber screams streamlined, so less is going to be more here. Consider some engraving (lettering, etc) and most certainly weathering. Think outside the box and beat the sith out of it. Scar it up with a dremel and some hard whacks with something sharp and/or pointy then give it a weathering paint job.
I *was* thinking about somehow getting a celtic design on the hilt, but I'm not sure how I'd go about doing that. Or how I would manage a weathered look on a silver libby. Dark is easy enough - sand her down in a few places, scratches here and there, etc - but the silver one not so much.
