First off I want to let you know that this plugin is coming along nicely. The dev pace is incredible.
Here are a couple of features I think would make great additions to what WP Customer Reviews can already do.
Option to display reviewer gravatars – This is already being done by the plug in its backend.
Location field – It would be great if there was an option to include where someone is from. For example it could like: Vince M, Los Vegas
Last but not least (as others have mentioned) some sort of sidebar widget
I’d be happy to help with testing so feel free to let me know.
Keep up the great work!