Envelope Status Management Recommendation

I have a client who uses the payments integrations to receive payments from their customers. This is NOT a requirement to their end users. As a result, some envelopes are completed with payment and other are completed without. On the “Agreements” tab, we need a way to choose columns that show, or, a way to add a sorting type to the left hand column, that would show who has paid already and who has opted to pay later.  I know that you can go into the history of the envelope and check. However, when you are sending out hundreds or thousands of envelopes, this does not scale.