A new quality of life feature coming in The War Within is Arachnophobia Mode, allowing players to dynamically change spider creature models into crabs!
Defined as the fear of spiders and other arachnids such as scorpions and ticks, arachnophobia is estimated to affect 3.5 to 6.1% of the global population, and given that we already know The War Within takes us deep beneath the surface of Azeroth and into conflict with the Nerubians within, it's no surprise that The War Within contains quite a lot of spiders!
A completely seamless toggle found within the game options, Arachnophobia Mode doesn't even require a game reload. However, it is clearly still a work-in-progress, as many of the more humanoid looking nerubian models are not yet affected, nor are bosses, pets, or mounts.