The phrase "a happy feature" is correct and usable in written English.
It can be used to describe a positive aspect or characteristic of something, often in a context where you are highlighting something beneficial or enjoyable.
Example: "One of the most appealing aspects of the new software is a happy feature that allows users to customize their interface."
Alternatives: "a delightful aspect" or "a positive attribute".
One happy feature of modern America is indeed that soaring interfaith marriages over the past century mean that the average person has a good many Aunt Susans.
There's a 1.3-megapixel camera, text zooming, and a happy-fun feature called Super Clear Voice and Super Clear Mike.
When she asks the audience to sum up Hello Kitty in one word, "happy" features at least five times, as do "joy", "friendship" and "smiles".
Scientific quality, revealed in such factors as publishing in leading journals, being a recognized leader in the field, and attracting talented scientists to the group and keeping them happy featured in answers from 65 percent of respondents.
The first video, called "Porto un(Happy)," features students from Pontifícia Universidade Católica do Rio Grande do Sul in Porto Alegre dancing in unfinished construction sites, including the city's World Cup stadium, according to The Independent.
This week, for example, Grazia is running a "Happy Body" issue, featuring a covershoot with Daisy Lowe.
What is clear is that the nice big picture of a happy Cominded team (featuring co-conspirators Scott Rutherford and Gary Barlow) has disappeared from Cominded's home page.
And even those concoctions have a local element: the Fred Berry (named for the actor who played Rerun on "What's Happening") and the Pinky Tuscadero (a "Happy Days" character) both feature fresh herbs grown in plots around town.
For the most part there is a happy coincidence between the features that are required (in answer to the first question), and the features that are actually observed (in answer to the second), and it is part of the genius of the discourse that these are so well woven together.
As did the Chevy spot during the Olympics opening ceremony, featuring a happy gay couple.
