....variety, diversity, and inclusiveness of bibliography.  For example:

• Range of years that make sense in terms of you topic
  • Look for recent scholarship/conversations so that your bibliography is up to date
• Range of publications
  • Books, chapters in edited books, scholarly publications, other types of relevant sources
• If topic appears to be international in scope, I will look for non-English language materials, or will ask if there seems to be a gap
• No longer need to supply an annotated bibliography that illustrates the diversity of your bibliography, but do think about this aspect and address if you see gaps
• Be sure to search Dissertations & Thesis Full Text to make sure your topic hasn’t been done
  • The title may look similar, so read the abstract, which will help you determine if the dissertation is actually quite different