How about lets say 2 guys live in DFW and both are FOs on an airbus. What if they were allowed to get together and were allowed to specifically do DFW flights/ When one comes in to DFW on his last leg the other DFW commuter starts his trip. It would take some logistics to work it out but that would cost almost nothing if it could be worked out. In fact it would save the company hotel and per diem costs.

the only problem i see with this is if that specific aircraft is used on that segment or if it gets shifted in and out of that station.