People are complaining about viking funeral.
Here's a quick fix:
Viking funeral is fine, what they should look as is the initial damage the grenades or melee will do when the viking funeral perk is active, they should do less initial damaged except when radiance is active seeing as it is the super. It's freaking simple conditional programming. Now the initial hit of that firebolt will basically red-bar you and viking funeral just does what it's meant to do. If you reduce the initial damaged of the firebolts then there will no longer be a problem. Also make it like the axion bolt, the grenade's effects are less effective if the user dies.
Same goes for incendiary grenades!
I don't think the damage of the grenade is the problem because if you turn off both Viking Funeral and Touch of flame (which is the legit perk to use), the grenade does damage almost equal to other grenades of that type (mainly comparing it to Arcbolt). It either knocks the shield out or (if it's iron banner or trials) it can leave you with some shield left. Viking funeral needs to be toned down a bit. As much as I want it out the game, Bungie won't remove. So if they can probably reduce the DoT a bit or reduce the ticks for it, I would be satisfied