As you said, a walk after a flight should be seen as a positive, and I walk a lot every day, BUT the distances involved at the two examples given are too far and convoluted for passengers to embark/disembark.Yes, those unable to walk will be transported by courtesy buggies, but to see those with kids, bags, clothing, forced purchases in the shopping centre after security ;-) etc etc, it's just not practical or efficient. So the idea of the mobile lounges makes sense, so long as the fleet is large enough to cover the passenger flight numbers. Those at short walk gates would be unaffected.