[denizen467]

Well I remember there initially being worry that the "Ledge" would uglify the look of the tower, even from a distance. But taking a look at the May 4 press release on theskydeck.com, the "retractable" nature of the new window bays helps assuage those concerns a little bit: There will be no structurally permanent protrusion. However, it conceivably could end up being the case that they'll remain extended outwards 99% of the time, retracting only for cleaning purposes.