I was once the founder and head of a Mages Guild in another game - that was very lawful and influential with the Government in the server.
The entire purpose of the Guild was to "regulate" magic(Since it was a Lawful entity, and Magic itself is chaos - it naturally sought to reduce this entropy). It would in essence, not allow anyone to cast magic spells without the proper license. It also regulated all trade of magic items, and required merchants to also have the proper permit to be allowed to sell magical items. Its members also made note of all magical anomalies, having specially designed items (like a compass) which would point in the direction of large sources of Arcane usage.
They were both a business monopoly attempting to control the trade and regulation of all magical items, a government tool - keeping dangerous weapons out of dangerous peoples hands (Such as making certain members of society criminal for them to use magic, at all - hence they were denied a license for any number of reasons.) , it also brought upon a thriving black-market trade of Magical items between PC's.
I feel like this might be a good cornerstone for this Organization - or perhaps you could soak up some ideas from it.
I just felt like throwing this out there since there seemed to be no "Goal" of your organization, other than a bunch of mages just coming together because they know magic
