One of the things I remember was so many pvp battles back in the day through that walkway. As Alliance it'd take at least a half hour of trekking. Taking the lake shortcut, and not grabbing aggro. Only to enter SM and have horde camping stone, or the inside by the portals. Then once everyone finally made it in, after multiple deaths, you realize you're in wrong instance.
I remember swearing that when I hit 60 I'd camp horde there for hours. That was one of the first things I did at 60. Unfortunately, at least on Illidan, the horde always got backup quickly, and the camper became the camped.