Bolt to the Heart @ Grandmaster
I think they will. But the trait will be still unused, at least in pvp.
scepter+daggers would pick fresh air over bolt to the hearth at any given day, staff would be still somehow viable, but you’d have to pick a completely useless adept trait and master traits (aeromancer’s training+shocking aura can be decent in some situations but definitely not great. weak spot only viable for pve ele’s, i could see pve ele’s go air traitline, but for wvw/pvp it seems to be a very weak traitline.
concluding: Bolt to the hearth most likely only viable for pve staff ele’s and hopefully sword but we’ll have to wait to see those skills.
if its bolt to the HEART, the hp threshold must be set low.. executioner and close to death are effectively 10% modifiers. to keep bolt to the heart as 10% modifier and below 33% health, bonus damage must be 30% extra damage to foes below 33% health
https://wiki.guildwars2.com/wiki/Executioner
https://wiki.guildwars2.com/wiki/Close_to_Death
both are 20% more damage under 50% hp.
bolt to the heart either needs to be the same or +30% damage under 33% hp. easy as that.