I was just trying to decide how often to refresh the data.
I had originally thought of doing it nightly, but perhaps monthly would be more realistic if changes are infrequent.
I'm sure you have enough to do, but it would be nice to have a way to know of recent updates and changes (or pending changes). Especially for things the are only irregularly updated. Maybe just a thread that we could subscribe to?
Once per month will be sufficient. You could subscribe to the 'postal code' category in this forum to stay informed about bigger updates. Corrections of a couple of codes are usually not announced.