According to BA aficionados, in the BA lexicon, an "enhancement" is a service - or part of a service - which is discontinued and which, according to BA, thereby somehow "improves" the consumer's experience. Of course, in BA's case what is enhanced is either BA's profit or its need to provide customers with something which customers probably appreciate but can survive without. I suspect the removal of the Trending Page has similar characteristics: a service appreciated by (most of) Flyertalk's customers cancelled because it is marginally profitable to do so and/or a minimal amount of effort on the part of Flyertalk's staff is thereby "saved".