I need to chime in on the ticket thing. First off people are reacting to a rumor - and a rumor by not the most reliable of guys.
2nd - if they put in some sort of tier pricing for multi-day tickets, I am SURE they will not make it THAT complicated. For those saying "How will they do hoppers?" for instance - my bet is exactly the way they do it now - by paying $75 per person - you now can hop from park to park. THere won't be a bunch of different options, it'll be a single adder, just like it is now.
My guess is the single park multi-day will work like this: Days at MK will cost maybe $10 so if you want a six day pass with 2 days at MK it will be $380, for 3 days at MK it will be $390. The point will be basically to try and discourage people from so many days at MK - the park that has the real crowd problems. The seasonal pricing will likely be fairly simple too...if any of your park days are during the higher season - the whole ticket will be at the higher season price.
This is all conjecture of course, just like everyone else - but I just don't believe that they are going to make it so complicated that the guests will have to plan out every single day to buy their tickets. ("Well, Tuesday at Epcot is cheaper - so we'll go there on Tuesday...")