ambient

1. Schedulable named pipes callable with dynamic parameters from the URL. More string functions.

3. Plugin / extension system addressable by URLs

4. I need a sense of reliability / scalability. What if I want to use pipes to index 1 million pages and send the results to me via xml?

5. Other output formats, including xml. RSS output is very cool though, and it currently exists. I can create widgets based on pipes that I create.

6. APIs to programmatically create Pipes

The fact that I could even think about asking for these things in a generic service is mind-boggling because 2 days ago, I would have thought that these possibilities were years away. This is the another step in turning the internet into a real operating system. Openness would be nice.

Nice services to have around pipes:

1. A means to contact pipe authors in order to get my content added

2. Digg for Pipes.