I think people need to really look at the Yeti situation realistically.
It's basically been a decade since the AA was in operation. Hell, the yeti was barely operational for 2 years before that. In that decade, Expedition Everest is still one of the most popular rides at the resort, and easily at DAK. DAK just got a big expansion and is currently more crowded than ever. They're not going to take a big, people eating ride down to fix an effect that hasn't been running for the majority of the attraction's lifespan.