War Mode, enabled and disabled in Stormwind, gives 15% bonus experience for quests and kills in any zone. whether you're a fan of pvp or not, this might be smart to turn on as Alliance starts on Kul'Tiras and the Horde are on Zandalar. Most horde are going to only be on our island for max level world quests. If you dont like PvP, my advice would be to turn Warmode on for the first few levels, then disable it around 112.
Allowing WoW Tokens to be used for Battle.net balance creates new demand for tokens. There are some players in WoW with lots of gold who have considerable excess even after paying for their subscriptions with tokens. There is a limit on the amount of subscription any player can use, and that amount of tokens doesn’t make a dent in the gold hoards held by some players. Now, assuming those players want to buy stuff in other Blizzard games, they have incentive to buy a lot more tokens.
Some people have made arguments that quest blues can sometimes be more powerful than heirlooms, especially with sockets. I'm not convinced. The simple fact that you never have to even look at quest rewards will save a non-insignificant amount of time over the course of leveling. Also of consideration is the value of enchanted gear never having to be re-enchanted.
The value of World of Warcraft gold has plunged relative to the value of real money in the past two years, but a series of events in the game have kept that fact from impacting the economy for players who don’t spend money on gold. That could be changing, however, and you might see some shocking prices in the auction house over the next several months if you’re playing Battle for Azeroth.
The Escalation patch has introduced several new scenarios with respective heroic modes that provide shiny new loot. It is still too early to predict which of these will demand the highest prices at the auction house or AH, since it can take weeks for players to work through the content and determine the value of the new drops compared to the existing items. Many expect the rarest and most prized drops to start commanding handsome prices starting June, so just keep your eyes peeled for popular WTB requests in general chat and high-selling items at the AH.
This is also the reason why when I read in WoW forums of people skipping guide sections, due to being too low level I'm not agree and start ranting about it: it'll be a mess syncronizing with the guide and I've seen many people complaining about missing quests or accusing the guide for being innacurate, but not realizing that was their fault since they're skipping and missing a lot of quest chain requirement. Of course this apply if you're following a guide, believe me, it's very frustrating when you remain stuck in a guide section due to the reasons I've mentioned, more than doing grey quests (but they allow to be perfectly in sync with the guide) and goiing here and there to get the pre-requisite quests.
Most of the time you spend leveling will involve questing and slaying monsters, but there’s also a lot of travel. Travel earns you little experience (you do gain a bit for discovering new areas), so it’s wise to keep travel to a minimum. The new level scaling system, which scales zones to your level within a preset range, helps with that. You can choose what zones you want to experience and stick with them until you finish their quests.
Playing through these zones, each with their own unique but interconnected stories and refreshing designs, immediately brought me back to how I felt when I played vanilla World of Warcraft and some of its earliest expansions. Instead of being a hero with near god-like powers like in recent years, players are back to being more grounded adventurers (going on more grounded, but still enticing adventures).
Special note: At 110 it's almost certainly worthwhile to go and immediately get your Heart of Azeroth and first piece of Azerite gear from the BfA opening quest. It doesn't take long and provides pretty high power levels. I'd then return to Legion quests until 111 or even 112, since the power of these items will increase your kill speed significantly over the scaled enemies of BfA content.
Before anyone asks - yes there are archived copies of old addon versions both on our github repository and on several of the addon sites we use, and these will continue to be available after Cataclysm comes out, so you'll be able to get those old files if you really want them. I'm not going to bother making these more easily accessible unless you give me a very good reason. "I'm on a private server and I need them since we didn't upgrade to Cataclysm" is a BAD reason - and it's illegal.