^ are you suggesting that people currently play the game strategizing which spell to use when killing a Marmot for example?

I agree there is a choice you have to make when fighting a flan, because some spells will heal them, I think what's really interesting when a Flan changes element during combat.

I think elementals should be healed in a similar way.

If you are going to keep the elemental wheel make it matter like Felis suggested.