Greetings!
I have a couple of follow-ups to your questions regarding the elemental magic adjustments.
We have no plans at the moment to make adjustments to Meteor. This spell does not belong to any element and its damage is affected through magic attack bonus and the number of people casting the spell.
Due to the fact that these adjustments will only be applied to player characters and not to monsters, the elemental magic adjustments will not be applied to spirits because the magic they use is treated as a monster type of magic.
On the other hand, the magic used by automatons and adventuring fellows are classified as player type magic, and as such these adjustments will be applied to them as well.