If you land on a planet and want to select missions, then the slots will be empty. (provided you didn’t add anything there)
in the “inventory” options you will be able to add items that you added before with one click.
However, if you click start and you do not have a few items that you added to your inventory, a notification will appear about the item not in the slot (and here I was thinking that there would be 3 options here:)
whether to buy the necessary items? (some price)
cancel (overall mission)
start with missing items
I think that such an option would definitely be useful