As it stands currently, Attack, Magic, and Healing power simply reflect your str/dex, int, and mnd stats exactly. That doesn't really give us anything we aren't already getting from those base stats with their respective tool tips.
Here's what I would love to see with those stats. Every ability we have has a potency multiplier. It would be really awesome if those "power"/"potency" stats gave us a value that we could multiply by our ability potency to get a rough idea of how much that ability will do. For example, for a character who heals 1200 per cure, the Healing Potency stat would be 300 instead of their mnd value.