In a typical three class international configuration, an A380 carries 525 passengers, while a 747-400 carries 416 passengers.
The arrival of a bunch of either aircraft at the same time is likely to cause long lines.
Double that number for more flights and the numbers really add up and this will not be pretty.
And by the way, do you like having to pay with taxpayers dollars the cost for rebuilding the terminal gates, taxiways and in some cases, the runways, to accommodate this one, single type of jet?
More is not better, and this wide-body mania will quickly de-evolve into a single class of service, mostly from the Pacific rim, and that 525 “typical” configuration will rise significantly.
Sorry, and I do appreciate your input on this, I see nothing but additional delays, aggravation and more cost due to this one type of jet.