This is my life

Yeah, that's one of my biggest pet peeves of writing serials. So hard to keep a strong throughline. The kidns of things you're describing - I think I'd make them separate stories in a series, personally. Related stories but not the same.

I definitely have the out of sight out of mind thing, too, and I reread for the same reason. I do that whether I'm writing straight through or serially - but when I'm writing straight through I have the opportunity to streamline if I see things that I can't work with. No such luck with serials.

I guess I write comments like I write fic - if there's any content to them, I let them sit and muse on it for a while, make sure I've said what I want to say in a way I want to say it. Not always, sometimes I'm too excited for that, and if someone is responding to me in real time, that can work out, because we create a thread of conversation. But if people aren't around and we're having a discussion extended over days, I'll take the extra time to check my comments over and streamline before I post. I've worked on a comment for an hour or more sometimes. Sometimes I leave it sit open in a tab and go do stuff elsewhere for a while and come back to it, so I can reread with fresh eyes, make sure I'm saying what I want to say and that I haven't missed responding to some important point.

Contrarily, if it's a throwaway comment, just one or two lines, I don't go back and reread after it's posted. I try not to commit typos, but I also try not to edit comments much. It's a balancing act.