Again, there are ways they can refurb Expedition Everest, but their refusal is due to obvious negligence around the park. A series of band-aid solutions has finally caught up to them.
The park opened with two attractions (Dinosaur and Kali) and two modes of transportation (Discovery River Boats and Wildlife Express Train). They quickly opened Asia a year later with a shortened version of what was meant to be a longer Rapids ride, as well as a strong walk through. The theming for the Anandapur expansion was done very well, Kali just needed to be longer.
At this point also, it was realized that the original intent of the Discovery River Boats was meant to be more than a mode of transportation. Rather than improve the attraction with an actual budget, they closed the attraction. Then the issues of capacity came out and the band aid solution of Dinorama came to be.
Expedition Everest was a major step in the right direction, and continued the theming that the park should be known for, but because it has been the only substantial addition to an under built park's 12 year existence, they have to rely on it so much.
In short, I love this park - but there isn't enough there for most people. I can spend 3 hours just on the live animal based attractions, but I know I'm in the minority there.
This next step for this park is a New Fantasyland level expansion on the Camp Minnie Mickey land. This budget will include moving the Festival of the Lion King to Africa.
Once this happens they'll have the flexibility to do several other things like add a nighttime show, close Everest to fix the Yeti, replace Dinorama with something more fitting and other things that haven't been widely discussed yet.
