The brief description of Empower type spells (where you charge up a spell by holding down a key) sound amazing, and I hope to all that is holy they use the spell type where it makes sense for all classes.
Ray of Frost
Pyroblast (my buddy suggested it could start as a lava dart, turn into a fireball, then finally a Pyroblast)
That one Druid spell that calls down the moon on a location…whatever that was.
So much potential.