This came up in a thread on Facebook.

There are a lot of things that could be done to shake up Twitter and provide users with some fresh functionality to explore. Because that's what I think we all loved about Twitter, the chance to do new things. I love the network, the combination of people, software, ideas and data. Twitter got stagnant. That's the real problem. Almost any change that opened up new functionality for people to explore that allowed them to connect with other people in new interesting and meaningful ways would rekindle the spark that Twitter used to be.

Then I read a piece asking what's wrong with the web. Same thing, same problem. I want to do interesting things with smart people. That's what I loved about the web.