How to improve: Purifier Robes (Fan Creations)
Burn Brighter - Activating Radiance from death disorients nearby enemies. Grants Song of Flame.
-or-
Spreading Fire - Activating Radiance instantly revives fallen teammates in a five meter radius.
I like the idea of Spreading Fire, because it grants payers a trade-off when it comes to saving their Radiance. If they go for a manual rez, they can be killed, forcing them to use their radiance (and try to get a revive mid-animation). If they pop it, they'll get an insta-rez, but won't have Radiance available in case of an emergency.
Burn Brighter (and the Purifier Robes as a result) doesn't have much use as-is, so it would benefit from having the rarely-used Song of Flame tied to it.