@REP
@Keet
One of the things the OP asked for.
Not exactly. The OP is asking for a means of differentiating between reposts that change the storyline and those that just correct errors.
Sorry, not so. As I said before, I am interested in finding out those stories that I have read that have since changed, regardless of whether it's the addition of a comma or a complete rewrite. If I know a story has changed, and when, then I can download the new version and look at the author's blog to see if anything was posted about the change. I can't rely on seeing the blog post at the time it was posted, as I might not have visited the site for few weeks. If Lazeez were to provide a way for authors to categorize their reposts, that might help authors explain their changes, but would not help me in my desire to find stories that have changed.
Information about whether a chapter has been reposted is available to readers in just two places: the details page for a story (accessed via the 'more info' link on the contents page) and at the top of the chapter itself. In both of these places, if a chapter has been reposted at any time, you can see both the date of the original post, and the date of the last 'update'. For example, for one story I am currently rereading it says at the top of chapter one:
Posted: 01/03/2014, 14:00:43
Updated: 13/04/2016, 12:12:18
This is a different kind of 'update' to what happens when an author posts a new chapter, in that chapter reposts don't affect the order of stories when you ask for them to be listed by update order. For example, looking at Lazlo Zalezac's stories and sort by update, descending, then Emend by Eclipse is at the top oof the list even though many earlier stories have been overhauled recently. Which ones have been overhauled? I can't tell, other than visiting the More Info page of each of his stories. Yes, info was posted on the blog in this case - but when a series was updated, the editor did not post separately as each story was changed. (No blame to him, it's great the stories are being revised, it's just that I wanted to reread each as soon as the changes to it were complete, and not accidentally 'read ahead'.)
Ideally, what I would like to have is an option to sort stories by their last change date - where last change for a story is the latest of the first post date of the latest chapter, and the latest repost dates for each of the posted chapters. It looks that I will have to wait for this! In the interim, to remove the implication that reposted chapters affect the sort order for updated stories, I suggested that a different word than 'updated' be used at the top of chapters: revised seemed one option, but it was pointed out this could have a specific technical meaning to authors; other options include changed, edited, say, ... but perhaps reposted is the simplest choice?
(ETA: I'm reading Magician, by QM. Best read in long chunks, as the cast is large.)