As a reader, I only like to see typographical, grammar, or factual errors edited after a book is sold. Continuity problem? Plot hole? Them's the breaks, the story as you brought it to market.
If you start going beyond straight error correction, well, I don't like it. In movies, I'll accept one "director's cut" later but not a "collector's edition" then "ultimate director's cut," ... Where does the madness end?
I say suck it up and admit your writing got better later in your career.