First, thanks very much Andrew Saturn for posting the updated renderings and information on this project. Very interesting.
Reading through the comments on this post there's some disappointment and frustration expressed that a taller structure won't be built. I get it. Afterall, this is the SkyscraperPage.com forum and the desire to improve a city's skyline is completely understandable.
I view this project a little differently. This may be an unpopular opinion but I am more concerned about how this development helps make the area work on the street level rather judging it with a heavy emphasis on zoning envelope maximizing building height.
On the other side of I-10 is the burgeoning Mercado District. How does this development help connect the Mercado District and downtown along Congress? That's my question. Of course and very thankfully there's the streetcar that connects the two via Cushing/Granada.
IMHO the I-10/Congress interchange with I-10 and its phalanx of attendant frontage roads is a hot bike/ped mess. The fact that Congress goes under I-10 makes the street connection a dark and uninviting place. Then there's motor vehicle traffic enhancing Circle K on the northeast corner and also a Carl's Junior on the southwest corner. Ugh.
So I see this development on the southeast corner as a positive. First, it is not a convenience store nor a fast food joint. In my view the site design helps create a sense of place for something other than motor vehicles. This development is not a cure all, but definitely a big move in the right direction with respect to walkability/bikeability/livability.
Having more people living in the area IMHO is a fantastic thing. The density spread across the building site for me makes it more desirable than a taller building on a squat parking podium. Retail fronting Congrees in my view is a huge positive as well. So is the street art component.
This site definitely has sone programming challenges. Only so much can be done on the side facing the I-10 frontage road.
Unfortunately, the U.S. is replete with cities that have great skylines but are complete car-centric abominations to live in because of terrible qualities at the human/street level. I never want Tucson to become one of those.
Lastly, thanks for lending your eyes to my mini-rant.