Since we moved XML settings in Tools | Options were moved into the Editing 
folder, I think the top-level XML folder isn't needed. 

Also, "Tree Editor" is an internal name we use to differentiate the XML tree 
editor from the XML text editor. The docs and most of our users call the tree 
editor the XML Editor, and just call the text editor the Source Editor. The 
problem here is that under Editor Settings, the XML text editor is called "XML 
Editor". 

How about doing something like this:

XML Settings (was General Settings, with the XML node icon)
  XML Node Views (no change)
  XML Editor Settings (was Tree Editor Settings)

And under Editor Settings, "XML Text Editor" instead of XML Editor.

What do you think?