There is no roof above the equipment on either balcony just side cladding at this end only. While replacing machinery should present no problems at the this end the other end will be somewhat challenging as the plant was put in before work started on the terminal infill.
As seen last year the CTA could not cope with traffic levels for one terminal let alone two. With the drop off area moving to inside the new multistory the jury will be out to see if it makes any difference to the traffic flows.
The airport has a very long history of poor designs of drop off areas that have needed constant modifications to keep the traffic moving. It will be somewhat harder to correct once the next move is completed.