PVP-bolstered FH would not be good, and certainly not "legendary".
A PVP-adjusted FH would barely heal more than the 1 hour buffs heals/leeching spells other classes have. A legendary skill should not be just comparable to a normal (non-legendary) 1 hour buff.
Cheesecakesandwich - Mage 70 | Wrecking - Warrior 70
Italiansausage - Cleric 70 | Snaplemouton - Rogue 67
Primalsandwich - Primalist 70
I'm a grand connoisseur of the most delicate dish known as the poutine.