Bring back 'no @replies' in main timeline option.

Somewhat related to the recent change where @replies to people whom you don't follow don't show up in timeline. I can understand the technical reason behind this.

However, it would be nice if Twitter brings back the third @reply option - to show NO @replies in the main timeline. Many people might want to filter out noise by just focussing on tweets without checking the conversation going on. This is especially useful for people are following lots of Twitter users. NOT showing @replies shouldn't cause any system strain. Maybe very few users use this option, but it _should_ be kept for the ones who _want_ to filter out @replies from their timeline.