Hi Steve,
I will be sure to mention Cs-Cart.com to our developers. I also encourage you to reach out to them and let them know you are interested in this integration - you can even have them reach out to us if they are interested.
Definitely continue to post your thoughts and requests to our forum so that we are aware of our shippers' interests. Should we make any headway with this feature we will make note in this thread, so be sure to "follow" it for any updates.