Heal Stamina - Mentioned by Gaffer. This skill would be in either the water, Ether, or wind skill trees. Light - Mentioned by Ubiq. This spell creates a magical light to illuminate your nights. Transmutate Gate - Hinted by Ubiq, this spell would probably temporarily alter the destination of a moongate.
All miners get a certain bonus from their leader.
Probably Passive magic. Reagent Consumption Reduction - Mentioned as an example of a booster. We have a number of special 'magical clothing' that tailors can craft. For example, a high level tailor may be able to craft a special smith's apron that enables the smith to craft items a little more efficiently. I think they'll be pretty valuable.