Whenever you start a new game, your furniture available to place are reset when designing. So your crafters would need to build that object first before you can add it to the design. Once it’s crafted, that item doesn’t need to be in stock anymore if you wanted to add that object into future building designs.
The problem with this is that you would need to build every furniture available by the crafter before you can start adding different types of furniture, windows and doors to your building designs and expanding your creative options. I think it’s very tedious to do that every time you make a new game.
I think the list of items in the design menu should be available if only your crafters can already make it instead of having them build it first before. This would also be handy since you could already save building designs with furnishes, instead of having multiple saved building of the same building with and without furnishes.
What do you guys think?