So you put down a building, complete with the stuff to put into it, however you need to then go to each workshop and put a job order in to make the item.
What if there was a class that was in charge of this, a bureaucratic sort of job that managed the construction of goods. This class would be in charge of keeping a list of what needed to be made, what needs to be made in order to make it, and then taking job lists to the relevant workshops. This way when you start the town you still need to do all this manually, but as you amass more and more citizens, this job could be passed on to one of those citizens. They could also be in charge of keeping track of inventory and making sure that there is a minimum number of certain goods (currently done by the workshops themselves).
This could all be done by just having the game itself manage the job lists, and assigning jobs when other jobs require goods. However I think it would be pretty cool if it could be a class, making it a bit more realistic and making it more of an extravagance. Not something you have to do, but as the town gets bigger, something that becomes increasingly more useful.