If I was CO, I'd scrape up an LGA slot or two, and run ERJ-145XR's to LGA from DAL. They're 50 seaters, so isn't that perfectly legal right now? Charge enough of a premium to make up for the CASM since DAL is supposedly so preferable for high-yield biz pax VS DFW, and have a big advantage on WN when Wright is lifted... in that CO is going to preferred LGA vs ISP. Or for that matter, just fly it to Newark. The XR can do it.