I've been given to understand that the relaying of any of the removed trackage will now be subject to environmental regulations. Before it was lifted, it was all "grandfathered", but now that no longer applies. So good luck with that aspect of "improving" the park.
Virtually everything they are talking about doing, they already had at one time.
Once Humpty-Dumpty fell off the wall and broke, it was impossible to put him together again. That is the real problem down there.