Okay, I think this should be possible, although it might be difficult. Here's the setup.

Given the enchantments known by guild members (or people marked as guild enchanters, if that's easier), and the enchantment materials sitting in the guild bank, it should be able to calculate all the possible enchantments the guild has available for its members.

Does anyone else think this might be a good idea? Perhaps this Addon is the wrong place to ask for it, though.

Might be better fit for it's own addon. Plus, I'm not sure how parsable the enchanting data is.