Thai used to have an excellent guy in Delhi who would take your luggage (in the 1980's, I was travelling with typically 90 kg) and the carnet (typically 2 cm thick) and return an hour later while you sat in their lounge, drinking something chilled and mildly alcoholic, looking as if he had been dragged through a hedge backwards, which is a normal reaction to dealing with Indian bureaucracy. As I was used to the being-dragged-backwards experience, I was truly grateful. I recommended him for a promotion.
I don't do that kind of travel any more, but if Thai still offer this level of service to business travellers, that's a reason to fly with them.