Reading a blog (as one does) and I came accross http://blogs.wdevs.com/marcclifton/archive/2005/12/23/11653.aspx
where Marc Clifton suggests a 'comment anchor' system which I think sounds
like a great idea and maybe something R# could do.
The basic idea is that a comment on the end of a line should be 'tabbed'
out to say column 120 (configurable of course) - maybe by noticing "]]>//"
so that any edits to the line would keep all of the comments left- justified
over on the right without having to add/remove extra tabs!