How realistic do you think it is to add to the protocol? I've played with it some and it can be great for what it has, but I want just a little bit more... like

How realistic do you think it is to add to the protocol? I've played with it some and it can be great for what it has, but I want just a little bit more... like a way to view user-generated events. I'm debating whether to play with an extension, or with the protocol itself.