That's an interesting use case. File attachments would be a tricky addition but not impossible. It might be easier to integrate chainBB forums into an existing file hosting platform initially though.
I don't think attachments will be anytime soon but that's definitely getting put on a list somewhere :)
Awesome. File attachments are definitely tricky ... but there is at least one person out there willing to pay a reasonable fee for the service if you ever do decide to integrate them: )