People have an option to use them or not. No more gold selling/buying, this was just as bad as the world buff meta.So your idea is to remove world buffs that existed in Classic? Yeah, that would be dumb. I wouldn't be opposed to some of the raid bosses being made more challenging. Progression that was the equivalent of what people actually went through during actual vanilla. Remove world buffs or greatly alter their duration (make them like 10 minutes long, or make it so you can only get one or two of the world buffs).
Just what I'd like to see, I'm only speaking for myself here but I think many would agree if they relaunch classic: