Commercial building item slots

Can I make a suggestion. The commercial building item slots should work the same way as the factory building item slots. For the factory building item slots the manufactured item remains in the slot until collected. For the commercial building item slots the manufactured item disappears from the slot when ready and shows the slot as empty. This is wrong! It should show the item in the slot as ready with a collect option just as in the factory building. This is very important for commercial buildings as they can manufacture different items and you can then choose which item you want to collect when it is ready.