No, the profound change in reality came inside the Shadowlands pre-patch, and is unfastened for all WOW gamers to WOW Classic Boosting  experience, whether they buy the enlargement or not. It's the levelling revamp, and I've written approximately it earlier than. It squashes one hundred twenty individual stages all the way down to 50 (raised to 60 via Shadowlands) and not a lot reorganises...