I can see the company "testing out" new markets with RJs in LGA or from small routes like Norfolk-LGA, but Dallas to LGA, RJs 6 times a day? That's the 4th largest metroplex in the country to the largest in the country.

How much bigger a market do you need for mainline jet?

http://www.gcmap.com/map?P=c:red,LGA...X=720x360&PM=*