You have great timing: yesterday during Collaboration Cafe, @gwhite asked @ryan about ideas for visualizing Likert scale survey data as well (link to the recording here, see 03:54). Let us know if that answers your question. My biggest takeaway from the conversation was how well floating bar charts can capture that data without overwhelming. Maybe that's a good spot to start playing around?
I'd be interested to hear what other suggestions are out there. Anyone else want to share how they've treated this data in Tableau?
Either way, stop by Collaboration Cafe on 4/19 and we can pick the group's collective brain on tackling this one.