No insider has said that they weren't going to use live mice to power the coaster, so, shall we put that on the table as a possibility?
I like how everyone can ding Disney for paying way more than necessary for a ride or land, and, at the same time, claim they're not spending enough.
So, when you cherry pick projects, you can certainly make a case for a lack of extensive theming. But you need to include other projects, too, for the big picture. I found the theming for Pandora and Mission Breakout to be quite extensive (regardless of how one likes or dislikes the looks of the outside of MB, it's extensive). The model for SWGE is mind-blowingly extensive. The credible insiders have lauded what will be the three new E-Tickets in DHS (regardless of the pain of closing down a beloved attraction to make that happen).