Welcome back to The Queue, the daily Q&A column in which the WoW Insider team answers your questions about the World of Warcraft. Mike Sacco will be your host today.

Just because I want to play as a monk in Diablo 3 doesn't mean that it'd make a compelling class choice in WoW! Check question #2 for hero class talk. Honestly, any excuse to talk about the monk is a good excuse. When is Diablo 3 coming out again?

Dragonrose asked:

Here's a newbie question: What the heck is the global cooldown for?

Essentially, the global cooldown exists to prevent spamming of abilities. Think of all the instant spells you have at your disposal. Now imagine that there's no limit to the number of times you can hit them in a second's time. You could macro as many Ice Lances as you could cast with a full mana bar and unload on the nearest whatever.

Now, of course that'd make for some decidedly unfun PvP, but think about it in terms of server resources for a moment. The server has to keep track of all of the requests you're making of it, from "use this item" to "cast this spell." If there were no hard limit to how many of those requests you could make at a time, the servers would be under dire stress 100% of the time. It'd be like old times in Lagforge or Lagrimmar ... or the AQ gate event!

The GCD also helps with game balance. "I can do X damage in one GCD" is a phrase we hear quite a bit, and it helps the developers when they can say, "We expect an elemental shaman to be able to do this many thousand damage in a single GCD" instead of, say, drinking themselves into an early grave.

Ilikethings asked:

Does Blizz have any ambitions for implementing more hero classes in the future? It almost seems as though they wanted to add them in quite a bit, but then with all the balance issues DK's had in the beginning, it's almost like they've been put on the back-burner as more trouble than they're worth. Anyone here have any idea? Thanks!

I'm sure the developers would like to implement new classes, "hero" or otherwise, but at this point it's less a matter of what would be cool and more a matter of what the game needs. What roles need to be filled or filled better than they are currently? What armor class would a new class use? Who would that affect? Why do we need another class when we have 10 of them already? Those are all-important questions that would need to be answered before Blizzard could even think about adding a new class.

Don't get me wrong, I'd love to have a new class to try out, but not if it functions nearly identically to another class and certainly not if it only exists for the sake of a bullet point on a feature list in a press release. We'll just have to see when the next expansion is announced and we see what the user retention feature like new races or a new class will be.

Matthew asked:

So we're seeing the Zul's in 4.1 redone. Any idea why not they are not redoing Ahn Qiraj as 5 mans; for those of us who never did Vanilla, they're just legacies for mount farming on LFG.

I'm of the mind that we'll see the AQs redone as heroics, just like ZG and ZA. Given the makeover (or lack thereof) Silithus received, I would be very unsurprised to see the zone given an actual pass to make it bearable and to reintroduce our favorite bugs. We'll know when we get news about 4.3, I guess!

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Have questions about the World of Warcraft? The WoW Insider crew is here with The Queue, our daily Q&A column. Leave your questions in the comments, and we'll do our best to answer 'em!

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