The new user experience concept of the Working Copy view in SourceTree v1.9 changed a lot for everyone being used to the "drag&drop" concept. But there is one specific thing extremely missing in this new view:
The Treeview for files.

In former releases you could at the top decide whether to display the files in flat or in tree view. Why has this functionality disappeared? When you now switch to see all files (not just pending) in a large project, you have no clue where you are inside your folder structure.
Additionally, displaying always the full path is unnecessary. In deep folder structures, the view will be overloaded. The user should be able to choose.

I would be very glad to see these important features in the first hotfix - otherwise I will be forced to downgrade to version 1.8 ......