No other customers asking for the feature is not a signal that its not wanted by many others. Other people suggesting the same thing is a terrible measurement, as suggestions from paying users is already an incredibly small amount of users and some users may just thing it would be nice but not enough to warrant sending in a request. For example: it would be nice if I had a one-click export of my favorites on HN to a markdown. I'm not going to write to them to suggest it because it's not a big deal, but that doesn't mean it wouldn't improve my experience using the the product.