The article almost seems to imply that they'll be "re-banking" at all hubs. When they say they'll "circulate planes like competitors in their network" that is my takeaway.
However, again, why follow Delta? pmUA and pmCO used to have pretty solid on-time records. Can't they look back and see what made things work? I always used to feel that pmUA had a solid on-time track record especially in the years leading to the merger.