As SLF on mostly long haul flights I am more than willing to pay more for a flight when it means that the crew and other employees are happy, when it means the airline is safer and planes better maintained, and when the my on board experience is more relaxing.
What really gets my goat is all the pricing games played by airlines. A few years ago I read an analogy of airline pricing vs. painting a house. That exemplifies what I mean.
What I really want is for airlines to figure out how much it costs to do a flight safely and responsibly (fair pay etc.), divide it by the number of seats, add 10% profit and charge me that. Not all SLF are so blind as to only take the cheapest price and expect prices below cost, but many of us want game free pricing.