In Crucible it just seems very inconsistent regarding weapons doing self-damage and the distance to the explosions seems to either totally matter on some grenade launchers and some do not matter at all. I hate to ask for attention to a weapon type like tube-loaded Grenade Launchers (like Orwing's Maul) but it needs to be done. Either have self-damage exist consistently (so something similar to what you did to Blade Barrage for hunters) for weapons like Grenade Launchers and Rocket Launchers or turn the whole mechanic OFF for all weapons.