Revision and reposting

So, I've begun a project of revising and editing the 12-String story from the beginning, in addition to providing new, edited, episodes in the story.

The issue is, that if I simply edit my current posting, it will not be noticed by most. If I delete the original, then I lose all the wonderful comments that have been left by people reading it in the past.

And does any of this matter? Should I just assume that it is something for future readers, and post a blog post that I've revised it?

What is the etiquette for the site, or is there an etiquette?

Edit: And of course my proofer noticed a number of stupid mistakes here as well. ;)