darth_ender said:

It's neither new, nor really overused, but I was thinking about it, and I wouldn't mind seeing the Kaiburr Crystal. It's an idea that deserves expansion, and it brings the Force more to the mystical side rather than the biological/midichlorian side.

Too late. Just this season of the Clone Wars there was an arc involving Jedi in-training being attacked by pirates to steal their lightsaber crystals. Sadly, they referred to all lightsaber crystals as Kaiburr crystals. So that about seals the deal for George level canon. Though I'm sure Leland will take the stance the Wookieepedia has and will make up an explanation about how only the pirate leader called them that and he was clearly mistaken.