I think this is something a lot of people seem to overlook. Yes the FLE is a...nice addition. But does it help the other three parks? Not in the slightest.
Look at Universal. They finished up WWoHP, and realized their original park needed a big draw. So they start work on a new night show, a big park expansion, and a refresh on other parts of the park.
Look at Disneyland. They're finishing up a 1.5 billion expansion/redo at DCA, and there's already talk of DL adding attractions because of the WWoHP California.
At WDW we get a capacity reclaiming "expansion" and a nebulous plan to possibly, maybe do something with Avatar in the next decade. While at the same time Epcot could do with at least 3 redone pavilions (cheaper than building full attractions), and DHS needs to be filled out into a full day park. On top of that, the resort needs infrastructure upgrades wholesale (roads, bus system, monorail, etc).
I'm not crazy and think all this needs to be done next year. But if ever there was a time for a solid 5-10 year plan for WDW, it's now. NextGen will add some interesting touches here and there, but for the most part its fixing things that aren't broke. And if they continue to ignore things that ARE broken...well I just don't know.
I'm not trying to be a hater or anything. I'm just sad because I've seen a lot of things slipping in the past decade, and they're things I don't think the company of Florida management really takes note of. At least I hope they don't take note of, because the flip side would be they don't care. And that would be even more sad.