I am aware that things up top should affect the structure in general, but at least for macOS users that feels strange. I would expect the trash can ❶ to influence the currently selected node below when clicking it. If this could be implemented that way I think it would make more sense as most people (apart from some people doing demos) we won’t be deleting all. Also, in the same macOS logic you can use a function key like CMD to toggle the functionality to “global” and even update the icon when CMD is pressed as visual feedback.
Thoughts?