I typically tend to prefer not putting too many NPCs in a scene, especially not a scene that I won’t be lingering on. The reason is pretty simple – time. It might not sound like it’d be all that much work, but the time taken finding an NPC appearance, trying to mimic it in modelviewer, exporting it and importing it into 3ds can quickly mount the more characters are involved. As an example, just setting up this particular scene took well over four hours, and normally I wouldn’t have bothered spending nearly as much time on a single page because it typically isn’t worth it.
Auberdine, however, went up with the Cataclysm. I figured it might be worth doing at least something with it.