If they consider moving the entrance to DHS so that they have access to more land on the south end of the park, there is huge potential for expansion of the current footprint, in addition to all of the blank space in the current park that they are creating with attraction closures. However, I am beginning to get cynical over Disney's current direction. Walt was all about his attractions and movies being for the people, and the current approach seems to be to squeeze every nickel out of every person and to charge more at every step of the process.
They really need someone in charge with a vision for the parks other than a dollar sign. Until then, we really aren't going to see much of anything that we are looking for. Sad, but the past 10 years makes it pretty obvious.