So for the second attempt I wanted something that folded in on itself, that from both sides. This project incorporated a number of, if I do say so myself, very clever innovations. The two sides overlap a little on each other so that they are held in place with a single latch. A score track keeps track of your coins and labor points so that those tokens can be discarded. And the whole thing does take up less space and less plastic (a little more than 60cm^3).
deserves just a little more space. It's not like Coin Age that uses it's space so well I can introduce it to someone who doesn't play board games very often. Better instead of focus my efforts on something else and abandon this project. It's hard, but it's for the best.