I think it means he wants to be able to set up a series of construction orders similar to supcom where you could build prefabs. This is where the topic of interfacing comes in:
How do we create a prefab blueprint?
- Ctrl + C -> Ctrl V
Discoverable, and intuitive due to most users being familiar with copy-paste.
- Drag -> button
Very discoverable, adds UI though.
etc.
Then there's the question of how would a user
use that blueprint?