\cite completion does not show the editor for edited books (which only have an editor, no author field in the BIBTex entry); the attached patch to bibtools.py solves this. (I hope I haven't overlooked any patch, but googling for "editor", "edited" in connection with "latexsuite" etc. is quite hopeless, and I didn't find anything in the current git repository.)
Suggested change: If for a book no author is present, the editor is shown. (If neither author not editor is present, there's no help anyway; if both author and editor are present, that's either an error or a hack, and then author and editor should be the same.) -- For all other bibtypes, the editor is shown (after the author) if present.
Highlighting for the editor(s) is also added.