The good enough is only in the minds of a few that for whatever reason think they know exactly what everyone wants, because that's what they want. They also judge that what they want is the right thing without a single thought that Disney might even know what they are doing. Of course, it hasn't opened yet so who knows, they might be right, but, really the compass of what was good enough as opposed to great died in 1966. It can be said that a lot of what he thought was great, was awful and didn't fly. He, however, due to the fact that he was "Walt Disney" could level it and build something else without everyone second guessing it. In other words, the public, as a whole, will make the determination about what is good and what is mediocrity not a poster on a discussion board that has never run a theme park.
Some of the other things that people think about might even be as simple as the huge plastic toys that didn't just materialize out of thin air. Those were designed and built by extremely good artists and artisans. The detail, the production time and the creativity of those alone are worth admiring if we weren't so wrapped up in make believe expectations.