Dice, action economy, actions, skills, attributes, proficiency, and magic. Now to over think everything- what's the magic under the magic? HOW do magicians weave elemental strands to cast a spell? We know it's a part of the brain based on the attribute, but HOW?
PSIONICS! That's how. Low magic to the smug, but the foundation on which their towers are built. The fundamental building blocks of all magic- mind powers. They still use a part of the brain tied to an attribute, but the result is the same. No change to how powers are used.