I know about that feature and I thought of it from the beginning, but I currently have no plans to implement it. If this is done, it will result in an item having multiple IDs (multiple layers), making the blueprint not universal. I often play scenes ,maps, and the initial base is often not in Nauvis. In this case, I have to organize many blueprints, which is too scary, the GUI of the shared area will also become more complex.
The function of the associated box is so convenient that you can limit the use of the associated box by yourself.The same applies to associated pipes.