the Burj is a thing of art. high tech art. this day and age its possible, simply watch a docu on this. 163 floors. 828 meters. its insane what they can do now100 mile mirror in the dessert. Nothing could possibly go wrong.
Exiting on on the sunny side of the building is gonna feel like getting hit by Superman's laser beam every time you step out. There's already way smaller glass structures that have issues with reflecting sun rays and damaging surroundings