many of our users have asked for RSS feeds as output
If your users are asking for it then it's locally popular regardless of how much use it gets on the general internet, and therefore it should be important to you. Local popularity (eg the market for your app) is significantly more important to product design than general popularity.
If your users are asking for it then it's locally popular regardless of how much use it gets on the general internet, and therefore it should be important to you. Local popularity (eg the market for your app) is significantly more important to product design than general popularity.