[@Partisan] The League was an organized and coordinated navy, but it was far from perfect. Being that it was composed of ten different organizations the ranks varied significantly. Most didn't have any sort of military ranking system in the first place, so I suppose it would be more akin to pirates.

[@Kimono] There are some magical abilities that are off-limits. I suppose I should add these to the OP...

No-No Magics:
- Teleportation
- Manipulation of Living Beings
- Anything particularly catastrophic
- Diamond (or anything resembling an "ultimate defense")
- Anything time-related (this should be assumed already)

Fairly simple, not too strict in my opinion. I should note, however, that characters with an Aeva and particularly powerful mages may eventually delve into catastrophic or ultimate defense level, but not for a good, long time.