Kazekazekaze! XD Yay~
Okay, I wouldn't set it on fire. Maybe sell it on eBay or something.
We can always hope that Lenalee remains special somehow (she's got scars on her legs, after all), since this chapter was so out-of-the-blue that it seems... unnatural. Half the manga pointed to Lenalee being unique. Maybe she'll get another upgrade and no one else will, and the crystal-thing is just to give everyone else cheap upgrades so Hoshino doesn't spend another eight volumes on Lavi and Kanda.