Kyber Crystals power the only fighter-sized ships in the galaxy with hyperdrive capability.
Interesting idea. Speaking of Kyber crystals, one idea I had was that during Anakin and Obi-Wan’s fateful duel (which in one of my versions was a three-way duel with Obi-Wan, Anakin, and Maul) was that Anakin, tapping in to the Dark Side, would change the color of the kyber crystal in his saber and would temporarily give his blue blade a red tint.