Adhikari Bandhu,
The perks? Tax free hauling of goods through the custom is not perk, it's a crime. I understand the rules of jhitighumti, and necessary items and used items should not be taxed. But a truckload of goods should not be passed through the custom in the name of perks.
I know you say, this is not the business of NA. But I don't know how corrupt are authorities of the customs offices and the NA employees. They work in tandem, and many a times NA officials are the ones who haul gold etc in the international flights on NA flights and the custom officers clear the gold through the customs.
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NA should not act alone on buying the planes. They should first do proper analysis of costs, expenses, infrastructure and risks and emergency matters. If everything is in place, yes certainly NA should go ahead and buy as many as the analysis allows. But I am pretty sure the runway in the TIA itself cannot handle widebody airbus planes; it is in dire need of upgrade and maintenace for a long time but nobody cares apparently. Another thing is, with 400 passengers in a plane, if there is an emergency at the airport, the nearest international airport to divert the plane is Delhi. Should we not focus on building a second international airport first, for example? Just remember, for a plane to be able to fly is optional. Once airborne, the plane must be able to land, it is mandatory.