Should I Edit the Text of my Completed Story Arc?

If you’re going through it anyway, a bit of polish wouldn’t hurt if it’s the sort of thing you’d be bothered by seeing now. If you do end up deciding to add to the text, maybe you could do a quick recap of the updates for current readers? Just something to give the extra context without reading all through it again. It would be a bit more work, but if you really want to work in new lore, that could be a compromise.