Do people think when Licht is going up the right that Kolarov will be in the box awaiting the cross or something? When one fullback goes up the other is literally the furthest teammate from the play so he will be back. I don't want Kolarov but having 2 attacking fullbacks doesn't mean when one is running the flank, the other is acting as a CF or some shit.
All it means is that you can now attack from both flanks and Licht will get a break here and there when the LB is bombing his flank.