Yes! Or a rule to at least allow you to change the weight per line item in the customs form that something different. 

Hi Jason, 

Thank you very much for your feedback! Customer feedback is incredibly helpful to us as a means of learning what could help our merchants, so we know which new features to build. This feature will be under consideration for prioritization.

If you know of any other sellers that would benefit from this feature, please ask them to comment or post here as well. If we hear this request from other customers, we will ask them to comment or follow here as well.