Kudos to JP, Sanders and all those involved with this "bold vision". I really like the concept given it would enrich and extend the options one has when attending events in the greater complex area whether it be ISU sporting events, conferences, theater, etc...
The initial renderings have the new commercial buildings on the east side of the current parking lots and is located half way between Jack Trice Stadium and Hilton Coliseum. The nice wide entry way that opens out onto University Blvd is out of place since it leads to no real pedestrian destination. General input I would give is to rotate the whole proposed site plan 90 degrees counter clockwise. This would locate the new commercial buildings along the south side of Center Street and also centrally extend south toward Jack Trice. This location is in close proximity and would create a greater synergy amongst the larger venues (CY Stephens, Scheman, Fisher Theater, new hotel, and Hilton Coliseum) that have events all year long. Crowds would have a quick walk to this destination to socialize immediately before or after events. The 90 degree site rotation would also allow the commercial buildings to line the central, north to south, corridor through the parking lots. The north to south corridor sees way more pedestrian flow as they access the various venues from the parking lots.
This would place the new commercial development further from Jack Trice Stadium but with only a handful of games at the stadium each year, walking the additional distance in the fall should not deter anyone. I also like seeing the wide open plazas and walkways that are in the current stadium upgrades that are also significantly expanded within this vision. In my opinion, I would like to see these areas near the stadium, that also extend north towards the proposed centralized roundabout, allow temporary vendors to set up shop to sell items such as food, craft beer, ISU merchandise, etc... This would provide an alternative to those who do not set up for tailgating but instead want to enjoy the game day experience with friends in advance of the stadium gates opening.