One other thing, and it’s a longshot…  Is it possible to paste a JSON string into a drawing and have it turn into a structured entity?  Highly unlikely, but I had to ask.

Did I select the wrong group to post this question?  Would it be more appropriate in Lucid for Developers or somewhere else?

Hi @LeeAtNM thanks for your post!

Your use case does not sound like something we have in our template gallery. Looking at your different questions separately, it looks like we do offer all the features you describe: 

• Is it possible to expand and collapse portions of the JSON?
  
  You can make use of the layer and shape actions features to achieve this. By assigning specific shapes to specific layers, and then assigning the “Toggle Layer” shape action to a different shape, you can show and hide the corresponding layer and all the shapes assigned to it with the click of a button. For more information, please read through the Layers article, as well as this section of the Shape Actions article in our Help Center. See below a quick demo of this: 
   

  

  
   

• Can connectors be drawn from field to field, so that they stay connected during the development of the diagram?
  
  By default, lines stay attached to the shapes they are connected to, even when moving those shapes:
  
   

  

  
   

• You can also upload a JSON file to generate a diagram via our API. Please read through this section of our API documentation for more information on this and let me know if this is what you are looking for. Please note that the Lucid Developer Tools are only available on Team- and Enterprise-level accounts. 

Hope this helps! Let me know if you have any additional questions!