"Mainstream"

Most notably, you. You said you didn't want the optional quests that start after completeon of a generation(like Andrass's Past) anywhere near the mainstream stuff, but atleast 2 people disagreed.

I don't remember who or where, but I think someone on the wiki called shamala and nightmare sidequests.

And I'm questioning puppeteer's classification as a "side quest". If we're going by length, puppeteer counts as mainstream; It's not just a bit of filler text like most skill/side quests, it has more story than individual saga episodes, and it comes with long cutscenes and exclusive rewards and everything.