This is legitimately good advice and works for almost everyone, but I do want to add that when an author believes that reworking a piece is worth it, we end up with such treasures as The Code by @adurowrites
As someone who reads favorite fanfics over and over again, it's always a treat when an author posts a new and improved version, especially when they give the reader insight into their rewriting and editing process
You don't owe it to anyone to redo your old work simply because it isn't as skillfully written as your newer stuff, but if you yourself want to engage in the endeavor and you think that it'll be good for you, go for it! And let me know afterwards because I want to read it
I know you said at one point that towards the sun was a multi year project (or at least I’m p sure u did? ig if I’m wrong just ignore this ask fjigjgjg), and I wondered something. What if by the time you get to the end, you’ve improved your writing so much that you’re not satisfied with the beginning anymore?
That is actually a normal part of writing! If you can see places to improve your old work, then you have improved since you wrote it. So like. It's a good thing when that happens.
Little edits like typos, or things like the Towards the Sun edit to remove icky blind stereotypes, are almost always worth fixing. The former is quick and easy (and bugs me on a visceral level), the latter is basic decency.
Big edits, like large plot or character arc changes, are almost never worth doing. Especially in fanfiction, where most readers aren't going to see those edits because they read the chapter months ago and ain't coming back.
AKA: I'll be leaving older stuff alone. Everyone can see the post date, if it's not as good as my newer stuff there's a pretty self-explanatory reason.