Actually, I was referring to the 7DMT but Slinky also took a while to get running. While I understand that Imagineering is tasked with pushing the envelope, sometimes they need to consider should instead of could. To develop tons of ideas and spend so much time on them only to shelve them because they don't work isn't the best process. I remember them saying that the pathways would react to steps but that didn't seem to materialize. Yeti, as Disneyhead stated, is non-functioning. The signature ride in Avatar can only function at 50% capacity. 7DMT length was cut in half. Sometimes, developing a ride that functions and has the intended capacity is more important than trying to plus things to the point where they don't work.