I came back from a trip in mid-December, and it was a really great time! The extra magic hours we attended were not crowded whatsoever, and the parks were never unbearably busy...until the last day, a Friday I believe, and it was overwhelming, unpleasant, loud, disorienting, and honestly, kind of disheartening. They need to find some way to bring these levels down, but I don't think there really is one sadly...an immediate one anyway.
I think in a lot of ways, there's so many little things that are flawed, dirtier bathrooms and walkways, the prices, the people they cater to recently, the crowds, the waits, the awfully repetitive gift shops (these really got on my nerves), how dated and boring Wishes and Fantasmic were, the condition and outdated-ness of quite a few attractions...it's sad. Regardless of my experience this last trip, which was a pretty amazing one...
They're not gonna do much. Disney is at a point, where people are going to keep coming as long as they pump out a few new things every once in a while that people actually care about (Star Wars, Pandora), then slap a bunch of low-rate events or "temporary" attractions to satiate the crowds and take in money from richer folks. We get mad about these things because this is what we love and crave, but the general public visiting probably doesn't even really know what MyMagic+ is...let alone how to reserve things.
I will always love Disney World, but it is losing just a bit of that magic everyone associates with it.