The Bright collage is primarily Battle focused, because of the imperial fire traditions. I think any fire mage whom refused to partake in violence, would find themself pushed towards being a perpetual instead of becoming a journeyan. As it currently stands, there really isn't many options they got after all. Super, a brewer is nice, but that's something you can do with an ordinary person, you don't strictly need magic for that, in the same way you need for calling down a giant flaming skull on an enemy army.
Maybe in the future, where Empire fire traditions have developed more, gotten spells/hints from ind, found usage in industrial machinery and so forth, that might be changed. But as it stands i think any pacifist, would find themself in a hard place in the bright Collage. That said, if you really are that, being a perpetual probaly isn't that hard of a choice.