Your concept is neat! Quite imaginative, I’d have a break down of its gameplay. Like perhaps a rotation example or something.

However;

I’d be happy either way. Caster DPS or Healer, as long as it’s not a carbon copy of a BLM or the current state of healers. They could do cool stuff w/ all three elements of Wind / Water / Earth. Manipulating the terrain would be a neat addition too. Perhaps your ground AoE abilities w/ certain %s could manipulate the ground around party / enemies.

I made a concept way back on pretty much centered around weather / terrain manipulation.

I may make a DPS caster down the line w/ terrain / weather manipulation in mind.

Come on SE give us a cool GEO rendition