I don't know... I have limited time on RAF... and would like to level three or four teams before the expansion.

Shammies are 63 and I'd like them to all be 70.
Hunters are 48 and I'd like them to be at least 61st.
Priests have not even been made.
Warlocks have not been made.
Boomkins have not been made.

The event is kind of annoying, when you're trying to level and have Zombies infect the quest turn-in guys.
Or attack your toons.

The other day, my hunters wanted to do a quest in Sentinel Hill.
But the zombies would not let me.
So I brought my 1x70 Shaman with the 4x 63 Shaman's, and decided to rid Westfall of the infestation.
Twenty totems and a few volley's of Chain Lighting got their attention; most died from a volley.
When they swarmed me, my Fire Nova's and Thunderstorm were equal to the task.
Having added a Disease Cleansing totem in the place of one of the shammies Healing Stream worked great too.

Unfortunately I got quite a few hate tells. But I managed to slay three 70's and their entire 25-man raid.
As a bonus, my hunters were able to log on and turn their quest in.

World events can be fun, but I hate when they prevent you from playing the game.
I'd be all for having either Argent Dawn cleansers at every quest hub, or restricting the event to specific zones or even a Zombie BG.
I look at it, as practice for my Shammy team which will be arena/BG focused. Well 4x Shammies for Arena, 5x for BG's.