This is borderline bigoted at this point. Changes are necessary to address the INNUMERABLE changes that technology and the player base have experienced in the last 12 years.
If you think that people will actually have to work to clear dungeons/raids, you’re wrong. MC will be full cleared immediately.
Most players in the raid were capped at 15 FPS back then, beyond having no clue how to do fights. Every PuG in Classic will have a raid leader that knows the ins and outs of the entire dungeon.
THIS IS NOT VANILLA. This is Classic. They are different things. Please get that through your head.