Okay one thing I find is annoying is that, When I want some money but I still have my boxes running. There should be a item that auto-sells when it enters. Maybe a "Black Market" machine. Or something to keep a steady flow of income so I dont have to wait until my supply boxes run out to sell.
And Another idea is a box refill tool. That way we can just click and it will instantly supply the boxes, so we dont have to go through the tedious process of deleting and placing the boxes again.
The final idea I have is a button on the screen that turns all the machines in the game off. That way if something messes up you dont freak out and delete boxes, and machines. It simply turns them all off and you can solve the problem. If this was implemented, you wouldn't need the box refill. Because it would pause the production anyways, so we can do it without worrying about clog up.