Yes, before the Grand Expo and TGS, there were many complaints of having to make long walks between Wildfire and ThuNderaTion. Putting all of one type of attraction in one place is no good, as you not only get less flow-through for many shops and eateries, but families have to rove from area to area of the park. I think they've realized this to some point, seeing as they built Electro Spin in with all the kiddie rides, and are planning on eventually expanding that area with more thrill rides.