When it comes to Classic, Blizzard's goal is to provide an authentic Vanilla experience, but they also needed to come up with technology to handle many players at launch, which is similar to sharding. While the use of this technology will be limited to the first month following launch, many players are questioning this decision and wouldn't like to see layering in the game at all.
Unfortunately, unlocking the Void Elves can be a bit more time-consuming than their Horde counterparts. For starters, you’ll need to complete the Argus storylines, which will grant you the achievement “You Are Now Prepared.” By itself, that quest chain may only take an afternoon. Unfortunately, you’ll also need to earn Exalted status with the Argussian Reach, which can take quite some time. The problem with this grind is that it is time-gated. You can only earn a certain amount per day, meaning it may take a couple of weeks to become exalted.
FYI: If you’re returning to WoW after an extended absence prior to patch 5.0.1, it’s possible that you’ll have more than the maximum pet limit and/or more than 3 of a kind. However, this will be the only time that you’re allowed to surpass these limits. You will have to pare down your collection, eliminating your duplicates, in order to add new pets.