Actually now, you're among the first people to board if you want. On the larger planes, rows two through five and 10 & 11 are the Extra Legroom seats for which you pay more. That allows you to board early - but when JetBlue starts boarding these passengers they include row one. I think that's because these passengers 100% need overhead space, since there's no seat in front of them and you can't have anything in your possession while the plane is taking off or landing.