Disney used to make really awesome playgrounds, with really elaborate theming.
The Honey, I Shrunk the Kids Playground:
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The Boneyard:
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(Not pictured: Its sandpit.)
Arguably the entirety of Tom Sawyer Island:
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One of these is long gone and two of them are getting removed. Meanwhile, the Monsters, Inc. land concept art has this;
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Which...I'll gladly be wrong, maybe it'll turn out to actually be part of something super elaborate, but it doesn't exactly look like it's living up to prior attempts.
We do still have the Mission: Space playground and the one you can wait in to get on Dumbo, but I think it's fair to say neither is really on the level of the removed/leaving ones. The theming is much lighter and they're much less sprawling.
So is this a dead art? Especially when there's really no reason why there isn't a Boneyard replacement planned other than just not wanting to do it?