[Fyron]

Having that for Ships would be a bad idea, and the function would have to be very, very complicated. It would have to check every single ship to make sure it can be upgraded, what it could possibly be upgraded to, you'd have to select what they all upgrade to (as it is quite possible to have many designs concurrently), and it would have to check every ship to make sure it is in a sector with a SY so it can be upgraded. Using this would be more work than using the spacebar to cycle through active ships to see which to upgrade. You can already select multiple ships of the same design to retrofit in the retrofit window. The game just does not allow you to retrofit multiple types of ships at once because then it would have to run a lot of checks to see if the various upgrades are legal or not (same ship hull, max retrofit cost limits, etc.).