@Malorien Look forward to seeing what you come up with. I'm not as familiar with the other elemental lords but I imagine the wind one can be based around agility, dashes, and lightning damage. Maybe even a stacking buff static electricity for moving. For all of us who spam strafe left-right all day.
Incredibly bloated with text and sharing a bit too much with the Flaming Templar for a melee fire user, I've thrown together a "Hurt yourself to hurt them to protect yourself to hurt them".
Cast fire spells to apply DoTs, use warrior physical skills to extend DoT at cost of its damage. Shaman spells to consume DoTs for bonus damage that hurts you. Fire ward to stop yourself from burning to death and give a small damage boost. Alternate effect for righteous fury tank.
Obvious flaws, we need to restrict fire spells apply Be Purged Insect to direct damage & mage spells or remove the option for flame shock to apply it. I couldn't fit in lava pools as much as I wanted, maybe its fire crits that drop a pool? Its open ended for all warrior & fire skills. idk, just fun throwing ideas around. Let me know if any of these concepts suite your fancy
Edit: I was suppose to do something where stagger instead gave you stacks of BE PURGED INSECT but I'm lazy?