Imagineering's output post-IJA certainly went downhill in the States, whether because of lack of money, Executives in charge, or whatever.
DAK is a visually meticulous park in sections (Harambe, Kali, various trails), but it lacks a certain magical quality associated with Disney's best design work. Maybe it's becaues Joe R. calls all the shots. Maybe it's because he is going for gritty realism that doesn't mesh well with Disney's (otherwise) clean escapism. I dont know. But look at the park's centerpiece. It's a BIG TREE whose leaves have a strange shade of green. Hmm. It's neat, but not as breathtaking as SSE or the Castle. (And no comment on the BAH, another example of the WDI's post-1995 work.)
I like DAK, but it doesn't hold a candle to MK or Epcot. I wonder if Disney will ever attempt to clone DAK or something similar elsewhere in the world.