How would you improve RSS?

If you were going to improve RSS and information feeds what would you do? What features would you add or remove? The question is somewhat similar to designing the better mousetrap or Wile E. Coyote finding a way to catch the Road Runner. In the process make the Acme Co. a little bit richer. But if you were given a chance to do changes to the RSS feed what would you do?

Me?

1. I would like to make it more simpler. Simpler than it is now. Now its a two click process. Maybe just a one click process and options like:

1. Simply subscribe
2. Customize the feed

Simply subscribe will just activate the subscription and that is it. Customize the feed will let you filter the feed to display on what one wishes to see.

2. All feeds be full text versions.

3. Feeds color coded to see the active and not so active feeds.

4. Ability to comment from the reader. I know this is being done now with FriendFeed and all other such services. But to see it directly from the reader would be nice.

How would you improve RSS feeds and the way they are delivered?