Let me touch on several of the points brought up in the last several pages.
First and foremost let us not make the mistake of confusing story with plot. They are not the same thing. The story has always been going out into the Harambe Wildlife reserve to see animals, the plot then comes from a completely separate action of there being poachers in the reserve. The plot here is presumably being eliminated. The story is not. While it may change, you are still going to an 800 square mile Animal reserve with multiple different ecosystems inside it. And story and to a certain extent, the plot will be shifting toward something more relateable (Which is apparently not a real word, but one that fits nonetheless) and that is wildlife conservation.
To be completely honest, I never rode the safari before the 2007 makeover, so I can't speak to how it used to be, but the current plot, is a little bit of a joke, Zebras are one of the most widely recognized African Mammals, and something that has been missing from the safari for quite some time. I'm told that they always made for a great show, they were almost always close to the vehicles, and that people loved them, so just to clarify, I am all for this change.
As for the specifics, the geysers will indeed be going away. The existing cattle guard just past the warthogs will remain, and it sounds like that downhill slope will remain as well, before the area opens up into a clearing, where quite a few zebras will graze (including, yes a new watering hole, although why the blog chose to highlight that I don't understand, there are already several on the ride, adding one more seems to be par for the course).
And also just to clarify to a poster above there is currently a Wilson transmission just past the Warthogs that states "Simba 1, there are poachers in the area, can you help us cut them off?" (Although how often the Wilson Audio works correctly is anyone's guess, I've heard some weird things out there, hah).
The moral of this story is don't count your chickens. I am a big fan of Disney's Animal Kingdom, and I have full faith that this is just the beginning of several park improvements we will see over the next few years. I've said it before and I'll say it again, Avatar, is going to be huge for this park, but management recognizes that it's been a while since significant capital was invested here, I think they will be ready for the party when the party comes about.
(And don't count your chickens about those night safaris either, They're hoping that Avatar will be extending the park hours significantly, but obviously that's just blue sky, so in the unlikely event that it does happen, who knows what form it will take)