Looking at the profile, it is much more stout than Burj Khalifa which should make the engineering significantly less complex due to the inherent stiffness.
On the other hand, much of the building's interior spaces will have little access to daylight due to the large size of the floor plates - at 1,000,000 m^2 it is has more than three times the area of Burj Khalifa.
That's a good point. You have to wonder if they considered innovating in that area as well. Perhaps a system that diffuses light through the ceiling of each floor? That would be quite impressive.
The innovations are primarily logistical not technological and in the end, lights in the ceiling are lights in the ceiling, not windows with a view of the weather or the city lights.
On the other hand, much of the building's interior spaces will have little access to daylight due to the large size of the floor plates - at 1,000,000 m^2 it is has more than three times the area of Burj Khalifa.