While I understand what you are saying, there are certain things in life that adults should know to expect especially when you are talking about a fantasy. Look what happened to the Yeti? I was a huge promise, it cost more money to build then can even be imagined, it was put in place and it was promoted out the ying-yang, but due to an engineering error it never turned out to be what was suggested it would be and the cost to correct that mistake could better be used on other things. If it really changed anything in the ride, they would have found the money to redesign it, but, and this is speaking from the viewpoint of someone that rode it while it was still working, you flashed by it and if you even blinked during the window of opportunity to see it, you didn't! It was not worth the cost to fix it. It is to bad that it didn't turn out like imagined but it is a prime example that even though the attempt was made to make good on the promise it didn't work. It was not intentional that it didn't work, but that didn't stop it from being inoperable. Things unseen can change the plan at any stage of the build and concept art is the very first part of any build. The art work is infallible. Everything works in the artwork then reality sets in and bites it in the butt. Like I said the best laid plans of mice and men are not always doable.
They did add capacity just in the wrong places. MK is the biggest guilty party in the capacity scenario but just like the complaints about Tron being in the wrong park, when capacity is added people find a loophole that still makes it wrong. Even things like Star Wars Land and Toy Story Land in DHS added capacity, but all it really did was draw crowds to the only two or three attractions worth seeing. So they added capacity but what they added was pretty much DHS's only draw attraction, there is nothing else there to see so the crowds gather in those spots like water runs downhill.