It still would not shock me at all if after the Avatar construction is competed next year that Everest goes down for a moderate-length rehab that will include fixing the oft derided yeti.
No way that Chester and Hester's is removed/replaced. That was done on the cheap and I bet that WDW sees it as a large space that real small kids will appreciate. Not saying that they can't/won't appreciate Harambe and Anandapur, just that carni-games and cartoonish dino rides are much easier for them to appreciate. Do I wish that they would change it? I suppose. But I would rather that they add on to DAK first as opposed to change something.
As far as adding IPs, I am not completely against it, as long as it is done the right way. A dark ride of the legend of the Lion King would be nice, giving it a slightly different interpretation. I am for shutting down Kali and expanding it, with maybe adding a few more animal exhibits to that area. This one is also a pipe dream though.
Right now, I am just happy about the Avatar expansion - which is what we are supposed to be talking about.