I'm quite ahead i know, but i think for the 14 pip spells, which would be the max pips we could obtain, they could be the strongest spells we could learn for the moment as of our spiral.
For the element schools. I think it would be time to be able to call upon the Titans.
The fire Titan - I think a good DoT effect would fit fire. Aoe btw.
The ice titan.
The storm titan - I think this should be a Pure hit spell(Storm is the damage dealer of the game, I don't see why people want a DoT with storm, honestly i don't agree with that).
For the spiritual schools.
Life - [Mother Nature] - This obviously would be a healing spell. One where it affects all of your team mates, and could add a strong buff, similar to rebirth. (Life specializes in healing, so i don't see why it should be an attack spell )
Myth - I can't really come up with one but, I think it should be a multi hit spell, possibly AoE.
Death - Grim ripper/Spirit King?- Obviously a drain spell.
Balance - I don't really know but, maybe something similar to Judgement