Issue: When using targeted AoE Spells while facetanking and Mobs die, you lose that target and cant cast that spell anymore. That interrupts Actionslots, makes you click a mob again, often makes you move from misclick and get your RM killed in the process. Due to herd-debuff, mobs always die at different times and you'd have to constantly reclicking a new target.
Solution: Make AoE spells that are dedicated for facetank non-target spells centered around you. For most spells thats already the case, but Elementors BurningField is an exception.
In short: Make BurningField similar to Electric Shock / Merkaba. Just a non-target spell around you. QoL improvement for (facetank) elementors.
EDIT: the suggestions made by @gilded pecan @stray narwhal @rigid gazelle below are even better.



