JetBlue Airways is considering "something that is a little more of a premium product

," following the introduction this year of seats with a few extra inches of legroom, according to CEO Dave Barger. The additional legroom option has "only been out there a couple of months and we're going to give that a period of time," he said during a Merrill Lynch conference. "We are heartened by what we're seeing [on] short-, medium- and long-haul [flights]."