I won't write pages and pages.
64 goods are a lot. This feature will make so many controversies so all the other aspects of the game will be left forgotten and many won't be playing the game or refunding it.
64 good doesn’t fit the theme too. It’s a medieval game, not an industrial age game.
I would argue most of the goods are already doing the same thing but acts as option locking tools for different regions and their research or civic options to be unique to their respective regions.
So why bother making it? Let ironwork same on every region or paper or glass… You don’t need to make it sound complex in order to give empty goods which make the same things.
Last thing before I conclude. Production chains should just be a sidekick, not the main thing.
P.S.I doubt the ai will be sufficient at it eighter