Scale Interaction

Hello all!

I am working on storyboarding a course, and I want to have an interaction where the learner identifies factors on each "side" of the issue and places them on the appropriate side of a scale.  As more "factors" are added each side of the scale gets "heavier" until the learner can easily see the correct option (the side of the scale with more factors) 

Has anyone created something along these lines?

I am thinking a drag and drop for getting the "factors" to the appropriate side of the scale.  And then either a motion path is triggered that lowers the scale?  Or the drag and drop triggers jumping to another slide with the scale at the appropriate level?

I would love some input or a sample of what others have done!

Thanks!