It won't be battle related as the article already stated. That means it won't provide PB or do the stuff it currently does.
Gotta think alternatively. What support functions could haing a MAG accomplish in a "open world" type game?
(This is just to get the brain juice flowing)
- Inventory companion. (Provide additional space, auto loot stuff around the map, etc)
- Portable class skill counter (perhaps allowing you to spend/manage skill trees without being at a world hub)
- Something to do with fast traveling/mini games. (MAG transforms into something along the lines of riding quest vehicle, maybe some PVP racing mini games?)
- Personal Client Order Manager (collect and turn in client orders from the field/on the fly)
Of course we don't know what yet, but it is fun to consider the possibilities.
I like these ideas.