DCI carriers will never get the pass benefits of mainline and their wholly owned carriers. Many DCI contractors also feed for other airlines aside from Delta, eg. Skywest. That would flood Delta mainline with tens of thousands of newly added peoplw who would become elligible for mainline pass privledges. It's a waste of time even considering this adgenda as Delta would never sign off on it. There is nothing in it for Delta, in fact, it would cost them money in the end.