As is often stated, the difference between Good & Great is in the details.
Gen III WDI has been creating some excellent stuff. But there has simultaneously been a seemingly institutionalized loss of attention or knowledge of little details in certain areas. I often find myself looking at a project that is 90% well done, but misses some smaller aspects that could have easily been done right - had the knowledge or care been there. This is extremely frustrating - like tripping at the finish line of a marathon.
Near the top of my littany of "little stuff they once did right, but miss now" is WDI's incorpration of extremely overt, modern displays into areas/attractions that are set in the pre-digital eras:
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They even go out of their way to replace perfectly fine analog displays (like those at the Haunted Mansion) with LCDs, spending money to make a place less immersive - their favorite word.
There are many other similar little things (e.g. designing custom exit signs to fit the environment; using illustrations in place of photos in period areas - particularly on menus/QSR venues; using authentic materials when possible in place of shaped plastic, such as "wooden" roof shingles) that seem to have become lost arts to WDI now.
Again, these little details add up to the difference between good & great, IMO.