Here's my concern, and not having kids I may be talking out of my ass: will interactive plants (that simply change color) really be enough? For children, specifically. It's being compared to Potter's wand effects but using a wand, that you buy at Ollivander's, to make stuff levitate is a special type of wish fulfillment. As technologically impressive as the plants will be, and as pretty as they'll be (for the 25% of business hours that occurs after sundown), I can't imagine most casuals will be so enamored with color-changing plants as Disney itself will be. And luminous/interactive walkways isn't exactly game changing. The effects are common from other parks to shopping malls.