We are highly reliant on your plugin's functionality.
A question, however:
The display of "inherited" (revision) pages in the Tree View: is that the desired functionality? You are seeing them here with all plugins deactivated:
As you can see, the multiple display of "inherited" posts make page management with Page Tree View rather tedious. :)
Update: We're now in the process of deleting oldest, then older revisions. When we click on a link to one of these inherited pages, it does not exist.
Update2: Even deleting all revisions still shows the "inherit" pages for that page. Noticing your datestamp feature, when we hover over one of these "inherit" revisions, the date last modified is from a year ago.