This thing has only been under construction for a few weeks now, so there's a lot to be done before anyone can really pass judgment on it, IMO. Right now it's just a bunch of sticks in the ground.
I think the concept art was more concept than anything. This looks like it will be a whole lot bigger and better than the little that was shown there. Considering the very young target age group, there's not going to be much more to it than stilted playhouses connected by ramps, but I expect the finished project will be fun to look at, at least.