"...line numbers to the view source (as mentioned elsewhere, you CAN see the linenumber already, just not constantly on the side) and having the suggestion come up from the community is already a valuable asset.".

In 2004 it was the same developer-focussed feature that it is today. I suppose it's only that today, the community is more concerned with developers and back then, people didn't mind as much. I still don't, as an n=1 example.