I couldn't find an existing topic asking about this so
The big pedastel in the guildhalls looks an awful lot like it's big enough for a gate to plop down onto
If, in the future, each guild had their own gate to pump minerals into, that seems like it'd be pretty fun and allow experimentally-minded guilds to try out certain recipes without fear of the general public diluting the mixture, and loot-minded guilds to tailor high-output dungeons to generate lots of crowns, etc
I BET there's already plans for this sort of thing though
That would actually be really awesome.