Arguments about the value of side quests aside, I agree it would be nice if we had a toggle to disable the icons at least on the maps since they tend to hide other information we're looking for.

I would especially like one to hide the Triple Triad icon. I'm not into Triple Triad. I actively avoid that quest now on alts because that icon is so darn annoying as it covers up all the other icons on the map I want to be seeing, like the Aetheryte.