Who remembers when Stealth actually involved sneaking around. It made the Rogue invisible, but came with 50% movement speed decrease (which could be talented to 30% decrease) because... you know... THEY'RE SNEAKING.
Now with the right talents they can literally "sneak" around close to the speed of an epic land mount... What the fuck.
Not only are those little fuckers hard to catch, but they're like little invisible bullets. Why not just make Stealth give thems shadow wings and have them fly around in Stealth at epic flying mount speed as well?
Jeez, Blizz. Ever heard of ability balance?