Interesting! From my experience we always get the flight upgrade, which is basically a fast pass around the airport but it also allows us to pick our seats on the plane and we get food.
For us it’s more ‘quality’ because it indeed is matched with luxury. Especially because we get more legspace on the plane. So I don’t mind paying a bit more for a bit more quality. But looking at the plane itself, there are always only up to like 10 people who get this and not more.
So is it really worth it for the company to offer this service if only 3-8% of an airplane gets these features.
Depending on the company and context, you’ll test accordingly and I do not mean the application but the analysis. Due to saying X% of the users will dislike or like feature X due to luxury. And if the luxury cost is profitable or wanted for the business it will have to be reviewed and taken into account with the refinements.
I always try to treat most people as luxury people. Like having the least clicks etc…