I don't expect these to fly to Western Europe, which would require a reconfig to add premium, lie flat seating like they had to do on the 757's to be competitive. As they indicated, after the burn in period the Hawaiian routes will be first, then(I suspect) other high density/low yield routes to medium size cities in Latin America.
I'm fine with no seat back IFE. An overwhelming majority of customers have their own devices and the planes have USB ports to keep powered. Half the time, when I'm on a plane with seat back IFE, I have to keep pressing the screen soft buttons to get any response anyway that I just revert back to my iPad.