I don't know anything. But from what I've come to know from talking to people (not all of 'em) that live in hot/humid climates is they like it COLD.
When I ..... and moan about the cold weather in Chicago people from hot/humid = enjoy.
Froze my butt off on an Air India flight once. On the top deck 747 I was able to talk to many and they did not agree, cold was better.
I've taken to bringing along a small hat when air traveling, just in case of a cool cabin or air blowing.
That's why I was so surprised our August 2013 NRT-ORD flight was so HOT. Not baby hot, but sweaty unrelenting hot. So much so that after requesting cooler air, the small almost infinitesimal change was much appreciated.
Also.. I think I learned this for FA in the states. The captain of the aircraft controls the cabin temperature. This could be out dated with the new equipment.