So it's not just Disney that isn't *responding* to EU, it's also Universal not responding to EU!!Or Pokémon, or any of the other grand plans that were developed rather far into the design process. People complain about Disney cancelling projects but they’ve got nothing on Universal and just Kid’s Zone.
The area wasn’t designed to be what it is, so something more ambitious would have some significant costs associated with things that are not guest faxing. But this project was something quick and cheap just to say they have something new this year.