It'd be cool if they could RFP some upgrades to their existing structures, kind of like what they've done with the historic properties they own. Many of these buildings have to be in need of repair, so why not take the opportunity to make them more urban-friendly in the process?
1) County Court Complex: "carving" out the middle of the Madison/1st Ave pedestrian zone to make a plaza would be so much more attractive than the trailer-like building that exists there now. Removing this and replacing with a modern, glass extension onto one of the other towers would help modernize the plaza and one of the towers at the same time. Additionally, buildings like the 4th street jail would look 100x better with copper cladding and glass accents - would certainly help unify the area with the new tower that sticks out currently.
I mean, to me, the first drawing looks so much better with just the cladding and a mural (apparently, the jail is being used as a no-kill animal shelter currently; who knew? I didn't... why not promote that?):
2) Garage Mahal: adding retail to 1 or 2 sides; this would actually drive revenue, so could possibly be realistic
3) Security Building: adding retail to the ground level; ditto regarding revenue
4) Heritage Park Garage: similar to Central Station, this property could be so much better utilized in linking the CC and AZ Center areas with the park. Right now, it seems so disconnected and like it has to be a trip within itself when its simply hidden.
I'll stop as I realize this should go in the General thread...