You have a Compare tool that compares documents from 2 different collections. The comparison I want is at a higher level than the document. I'd like to get a diff of schemas from 2 different collections. You already have a great Schema tool. I'd like to get its output from 2 different collections and generate a diff between the two. So a schema diff rather than a document diff. I can think of many use cases for this. For example do a schema diff between dev and prod to generate release notes for a new release or comparing dev to qa/test where a document by document comparison makes so sense because the data if completely different.