I use and appreciate the Discourse Analysis resources available in Logos. How about a graphical Discourse Analysis tool so we can diagram, analyze and document passages ourselves (applying what we learn from the resources) - maybe like BibleArc.com? I like BibleArc.com's basic set of tags and the ability to add my own. The tutorials and other resources to help learn and refine your skills is also very good. (Is there a partnership opportunity here?)
This should be in addition to the needed graphical sentence diagramming function yet to be added to Logos4.