I recently got Cobalt for my warrior – absolutely love it, the way it looks normal when stowed and has this fantastic effect when wielded. I specifically love how it lights up the area around you.
I decided that, since I have a sword on swap, it would be cool to have Firebringer and swap between blue & red flames, so sold as much as I could to be able to get the mats to craft it. I like it, but was disappointed to see that even though it’s on fire it doesn’t emit light.
So that’s my suggestion, really. It would be nice if you could add light sources to things that logically should have them, like Firebringer, Volcanus etc.