Star Ratings on Testimonials Plugin (and user submission)
Add Star Ratings to Testimonials Plugin (like Rich Reviews Plugin - http://wordpress.org/plugins/rich-reviews/)
Also allow people to post their testimonial using a form (that you can approve before publishing).
AdminJames Koster (Admin, Automattic) commented
This sounds more like a reviews engine than a testimonials plugin. Similar, but with a distinct difference imho. I think of testimonials as being specific to a particular client/project. Reviews are more generic and can be for anything, a product, a service, an event etc. Based on that I think it's unlikely we'll add this to our testimonials plugin.