I think there would be much more buzz about it if, ya know, we actually had a place to view construction from.
People are interested (in the theme park community at least), it's just hard to find updates.
If anything, the floating mountains seem like one of the biggest architectural feat from Disney since Spaceship Earth and the glowing sidewalks and possible "living" flowers should really make the area unique and a beauty at night. Worth the cost? Almost definitely not, but it'll still be very nice from what i'm expecting.