Voice Thread Experiment

I can easily see how I could use VoiceThread to have students view and analyze floor plans in preparation for class discussion or an extension of a class discussion. I want students to be able to look at a floor plan and discuss what they find to be the benefits or disadvantages, and mostly these are based on their own opinions. This would add a dynamic method of contributing to the class discussion.

I do have a large number of students (about 150 in this class), so I might make a Voice Thread for each section of the class to cut down on the number of comments at one time. Or perhaps the point is to have a large number of people contributing? I would feel that for something like this, there would be so many duplicate answers. I'm not sure how I would manage this. Any thoughts?