A different brand of challenge is presented by the PVP, which has undergone multiple phases and metas throughout the game's long lifespan. As in any competitive live game, some classes will be a fan favorite criticized as overpowered in one era only to be left behind in the next. The team says this is one of the main reasons it chose this specific iteration of WoW.
World of Warcraft (also known as WoW) players have highly requested the classic version of their favourite game. As with any game, changes and major updates are added over the years. Since August 2006, many changes to the game have not been received well: such as trivialising levelling up. The level cap will drop from 120 to 60, but contrary to how that sounds, it will be a far more grindy journey of fun and progress. The current developers have made levelling up very fast in comparison to the classic days, purely to focus on end-game content and raiding which many people do not enjoy. Prior to these changes, many people enjoyed the games for years whilst not hitting max level, something never seen in the modern edition of World of Warcraft. The levelling process was a journey, having fun with professions and the grind that is no longer found. Of course, there are countless other changes that will be reverted, as you might expect when comparing something from 2006 to 2019.
World of Warcraft Classic has been in closed beta for just under a week. In that time hundreds of players clashed in the Arathi Highlands, the Classic WoW subreddit crested 100,000 subscribers, and the beta has garnered over 150,000 concurrent viewers on Twitch. I've personally invested 20 hours into the beta at this point and am shocked to find myself enjoying parts of the 15-year-old MMO that I remember as mundane. Going in, I knew I'd love the single-shard servers, non-homogeneous classes, lack of flying mounts, and many reasons to interact with other players, but I didn't expect to enjoy the surprising difficulty of simply questing on my own. It's easy to take what I'm playing for granted but the fact of the matter is that WoW Classic wouldn't exist without years of deliberation on the part of a passionate fanbase, followed by years of development on the part of an equally passionate developer.
That's not to say that everyone has an unrealistic vision of what vanilla WoW was like. There were already plenty of people on the WoW Classic forums pointing out that perceived bugs are just recreations of the original game. And as noted before, a flaw to one player is a key component of the original positive experience to another. WoW Classic will surely please plenty of purists in spades. But this goes to show that it won't be for everyone who has fond memories of the game circa 2006.