Don't like to change too much once it's up.

What I meant was a completely new "follow-up" post, much shorter, with a different title, taking into account from the beginning what you wrote in the postface. You should link the new post right at the beginning of the "old" one.

But as I said, I completely agree with you, so that new post would only be useful to others who haven't read (and/or discussed and/or fully understood your points).