Hmm... This is an interesting idea. But I don't like giving him that much credit.
Given Rens tendency towards fits of rage that often result in random destruction, perhaps he cracked the crystal out of anger.
C'mon. I'm trying to give the character some chops instead of just being a pathetic emo wimp. And you have to admit, deliberately constructing this saber as it is makes for a more imposing villain.
That's how I'm still seeing it for now. And with the info from Ahsoka's novel about subduing a crystal, Ren may either damaged the crystal or the crystal split as he is split in his own thinking. DC has taken away much influence a Jedi has on their crystal, but seems to still transplant Ren's qualities to his saber.
Just....please......no. Can't they just tell a good sci-fi story without every last thing being crammed with rhetorical metaphor?
Something we do not know is if Kylo built a lightsaber prior to his fall. Or if this saber is his first. Or more interesting would be if this was his first saber that got damaged in battle and he rebuilt it into the crossguard based on what he could do with what remained of the crystal and hilt.
Doubtful. Unless the DC is throwing out everything we prized from the OC, Luke would doubtless have upheld the Jedi belief in resisting the temptation of easy power, and advocated simplicity in saber construction.