The cargo containers speed penalty should scale with the amount of weight inside of the box, which is such a simple solution.
Such a great idea, but was implemented in such a nonsensical way.
Difficult to express in words how stupid it is that you need to demolish the structure to avoid getting a speed penalty on an empty box, and then install a new structures when you arrive at your location and want to sail back with your goods.
This concept that they are going for extends to every aspect of the game which is wasteful and doesn't really have any logical basis other than wanting people to farm every more. Everything non-structure related (IE not walls, ceilings, etc) should be pickup enabled. No reason you should not be able to uninstall a cannon to upgrade it with one with a better stat. The fact that you have to destroy everything in the game is just wasteful.