Also

You could take this one step further and have the button open a gui for selecting one specific item and a slider for how many units you want to send.
But that might be overkill?

TL;DR
Make it easier to manually send unrequested items from one space platform to another.

What
A simple button to manually send all unrequested items to another platform (or the planet).
You would click the button and see a dropdown menu for available receivers (the planet + any other ship in ...

With old recipe categories like "electronics-or-assembling" used for the electromagnetic-plant recipe, assembling-machine-1 was excluded.
With new the categories like {"electromagnetics", "advanced-crafting"} this now includes assembling-machine-1.

tl;dr
assembling-machine-1 can now craft an ...