I think it would be cool if the devs reintroduce elemental-specific pet foci (see original Staff of Elemental Mastery: Fire, Water Air, Earth) in the upcoming expansion as tradeable chase loot for magicians. Think collecting Pokémon! The pet foci itself would be equivalent to EM27-28 but only restricted to one of the four elementals (e.g. Focus: Mastery of Fire). However, each staff would have a special click buff for each elemental. Fire Staff: Spell Damage Increase (Mage), Special Nuke Proc (Pet) Water Staff: Heal Increase, Group Heal Proc Earth Staff: HP/AC Increase, Additional Prism/Aegis Proc or Root Proc Air Staff: Mitigation/Deflection Increase, Group Mitigation Proc Given the popularity and rarity of Golden Sage's Earring as chase loot, I think this would be a nice new addition for an Elemental Planes themed expansion.