So, loadouts: not only are they shown on the mission deployment screen, as Dan has just discovered, but there's also an option in the supply drop stuff to have a specific loadout supplied to you out in the field when you need it. It's a shame there's only 3, but it's still useful to define loadouts for different mission types so that you can switch equipment sets out in the field when you're going from one mission to the next.
cLoudForest's comments