I don't think these playgrounds will make kids more creative. A lot of creativity is drained out of a child when they hit a certain age and life becomes relatively cynical to them. It can't influence a child so much that they stay creative. How many of us think - "Wow, thank god I had that playground in my childhood or else I would be sooooo uncreative!"
Right? We already have to look at ads when we go on the internet, when we watch TV, and when we're driving. Now we have to see them in the sky. It kinda reminds me of that scene in Futurama where they have fireworks that endorse products.