The entire NextGen initiative was groupthink. They were trying to make lemonade out of lemons.
It's not that WDW is a lemon. It's that they have a severe ride capacity problem given the number of annual visitors and hotel rooms. Their ride capacity problem is their lemon, not WDW itself.
3 of WDW's 4 theme parks are being treated as half-day parks by a growing number of guests. At least Epcot has the World Showcase to visit at night. But parts of DAK and DHS are ghost towns after the sun sets, even on days when MK is bursting.
In order to implement FP+, Disney has been forced to convert a lot of their second and even third tier attractions into FP+ to try to make them seem more appealing than they are. (When's the last time Figment has appeared in a commercial?
) Again, they are making lemonade out of lemons.
It would take billons to create enough first tier attractions to get all 4 of WDW's theme parks to where they really need to be in order to implement almost any other strategy besides MyMagic+. Even Disney has acknowledged the problem by publically stating that their plans for DAK are to make it a place to visit at night.
It's also why we can expect something exciting at DHS.
Just wish we didn't have to wait so long.