My thoughts on Aurora Mall:
The actual mall seems to be doing fairly well, so there is no need to demolish it. A street grid would be constructed to better accommodate the existing mall layout, and transition the area into a secondary CBD.
The four main blocks surrounding the mall would be where skyscraper development would be focused. Behind Abilene Street, a parking garage would be constructed to allow those exiting from the Interstate to access parking easily. I included a dedicated ramp from the top level of the parking garage to South I-225 in order to keep traffic from making 3 left turns, but I don't think CDOT would likely approve of it.
In light of the tragic theater shooting last week, the land on which Century Theaters currently sits would be turned into a Memorial Gardens. (Side note: For those who have been there, where in relation to the theater lobby is theater 9? I want to make sure I didn't inadvertently propose a street over the site.)
I didn't fill in the remaining blocks, but it is presumed that they would be filled in with development as time passes. Initially, they would start out as segmented parking lots, and when it is time to build the parking would be moved into garages.