I really enjoyed last year's course, and I really enjoy running through Animal Kingdom, so I will be a bit disappointed if that is cutout.
I will say that I think I had a better experience last year than a lot of people. When I went through the boardwalk area, for the most part, everyone was going the pace I wanted to go. It was pretty tight but it worked out okay for me. I can see how (like the castle can get) it could get to the point of everyone having to walk or stop to get through there. I would say I'm not speedy, but a middle of the packer. So I agree that it would be best to have that portion later in the race.
Also, I think I was pretty lucky with the All Star buses, because each time I needed one, if one had just left another had already arrived and I didn't really have an issue at all with the buses. I did see the long lines for other buses.
Anyways, I say all this to say, I really had fun last year and enjoyed this weekend. It wasn't all bad, but I do see (from other's reports) that things did need to be fixed. So I am hoping that I will have as much fun this year as last year and that most everyone will have a great experience!