Some imperfect data points on how to judge if a language feature is wanted (or not):
- Discussion on forums about how to use the feature
- Programs in the wild using the feature
- Bug reports showing people trying to use the feature and occasionally producing funny interactions with other parts of the language
- People wanting to do more complex things on the initially built feature by filing features requests. (Showing that there is uptake on the feature and people want to do more fancy advanced things)
