Heeeey....
I've been absent from MMowned for quite a while now, used to be a model editing expert but since Blizzard screwed that up for us all..
Anyway, I rerolled recently and rolled Orc Warrior. I was doing the Dalaran Quests today and was killing a 'Dalaran Worker' in a half-tower to the south of the bubble. He ran away at 30% and ran THROUGH the bubble wall... Ideas!
As I thought, it worked. The mob ran through the wall, bam Berserker Stance, Bloodrage, Intercept (In-Combat Charge) and straight through the bubble wall, inside Dalaran ^_^.
I'm only posting this because I didn't find any other posts about it anywhere on the site... apart from the Mage Slowfall in one.
Alas, as this requires charge it is only available to Warriors and Feral Druids. but maybe a Goblin Rocket Helmet would work also? Ah, and the mobs are only hostile to horde... So this lowers it down to only Horde Warriors/Druids.
But anyway, this map shows the spot at which I got in, but i'm sure you can get in almost anywhere
Enjoy.
Just remember , get a Worker or a mob that runs... Drag it to the bubble wall, hope it runs through and just charge through after it. If that doesn't work, go to the tower on the map and try the worker there, 90% of the time it will run through the bubble.
Apologies if you aren't able to do this since you're the wrong class... Go level up Engineering and get a rocket helmet ^_^