The attraction is a bit gimmicky, but that's not so bad as the structural add-ons.
Though the attraction looks like a blast to participate in, I don't like the look of the project because of the way it will further mess with the tower's profile. Although the look of the tower has been cluttered with heaps of extra communications hardware for years now, I don't like seeing it tampered with this blatantly - or permanently.
I would have rather seen them put high glass wall around the parapet and created a new open-roofed observation deck. Anything with less visual intrusion, then messing with this landmark.