Yes, the east-west-east zigzag before reaching National Hall will add some walking distance to current departures. The total additional walk for someone arriving by car is the equivalent of walking across the street and back.

It's much clearer than the prior plan to have pax go from level 3->2 (NH)->4->2 (piers), though, which also wouldn't have added much in the way of space or amenities to the sterile side.