As an API provider, would indexing and discovery of your APIs be of value to you? As a developer with discovery may enable synthesis and composition of APIs. Sites like ProgrammableWeb (http://www.programmableweb.com) and API Harmony (http://apiharmony-open.mybluemix.net) would do better if they could understand what changed and what is available.

I lead the API Harmony team at IBM Research and this information would be extremely valuable.