Just a thought for a desired feature: If I could drag and drop a graphic output to its own window, and then display editing separate from actual visualization, then it would be easier to experiment.

As the code for graphics becomes larger and more complicated I find myself scrolling up and down on the page after each change (and often scrolling isn't voluntary). Exiting the second window with the graphic could put the graphic back into the original document.

The result would be the ability to edit and update code and see the result without constantly scrolling around. Perhaps the code might change multiple Graphics3D objects at the same time, in which case editing the code in one place and seeing the changes on multiple separate windows would become even more convenient.