Some nice little things to secure:
"No projecting balconies shall be permitted on the east and west sides of the tower."
"The owner agrees that the materials for the east and west elevations of the tower shall include curtain wall or a comparable system, and that the materials for the exposed underside of the tower (soffit) and the exposed columns will be of high quality all to the satisfaction of the Chief Planner, as determined through the Site Plan Approval process."
My money says that they'll be selling this site so I hope that whomever picks it up continues the strong architectural expression secured here.