I went to the public input meeting; some information and terrible photos:
(click to enlarge)
The Henning Larsen team emphasized that these renderings look much more final than they actually are. This view is from the northwestern corner of the building (closest to city hall), looking south along 4th Ave. They said this is a bit inaccurate, as the main entrance vestibule would about where the woman in the black skirt is standing (directly in front of the reception desk). There will also likely be a small grab-and-go style coffee bar (or similar) near the bottom of the "signature staircase" in the northwest corner of the building. They mentioned Penny's on Washington as inspiration.
They said they want the building to be usable by the public in many contexts, eg. reading the paper with a coffee, meetings, eating lunch; not just for city government services. There will be a wide variety of seating and standing drop-in options throughout the public areas of the building.
(The north arrow is wrong in this image.) This is the less-preferred potential ground floor layout. I failed to take a photo of HL's preferred option, which would move the retail (aforementioned coffee bar) to the northwest corner.
The MPD space is apparently some kind of youth services location, which will mostly(?) be run by a non-profit entity. Sounded like it'll include overnight holding cells, basically, but with a nicer name. This will have a separate entrance on 5th St, and will mostly be hidden under the signature stair. There will be a vehicle entrance on 5th, with some room for police cruiser parking.
The yellow rectangle on the left is the public restrooms. The ground floor space will be open during skyway hours (10pm); not sure whether that'll include the restrooms, but someone requested it. Also suggested was the idea of making the restrooms accessible 24 hours, via a bank-atm-entrance-like setup.
The red conference center will hold about 150, is dividable into 3 parts (flexible, so 2/3, 1/3 split is possible), and will be accessible to the public (not sure on the details there), and reservable/rentable for private conferences. They showed this rendering (from their U of Cincinnati project):
Main entrance is on the top right (NW corner) somewhere, with secondary entrance below the skyway (SW corner). The white strips in the trees in the NW are benches, I think. Not much room for green on the 5th and 6th St sides, but it sounds like there will be planters by the building.
They emphasized that the first two levels would be all glass, and the inside and outside would blend together. They also assured the woman from the Audubon Society that there would be bird-safety features, and that bird safety will be given priority over beauty.
Again, this is a picture of the less-preferred layout. Preferred would move the public service area to in between the purple "building core" blocks. The city is planning on implementing a new service model, that sounds kind of like a Genius Bar. The front desk would be staffed by "superstars" or whatever, who would likely be able to handle any simpler request directly, like parking permits, etc. They'd then help you set up meetings with the appropriate departments, which could take place in the drop-in work spaces / public seating areas behind or near the service counter.
Looking at the NW corner. I asked someone from HL for a sneak peak at a rough exterior design and was denied, of course. He suggested I look at HL's Cincinnati or Microsoft projects, but said that those aren't "quite right". He also said that they don't have an unlimited budget, it won't be all glass, it won't quite be "iconic", but it'll be "very nice". They didn't show exterior designs today because they were still working out the budget constraints, and didn't want to present something then have to walk back the design due to costs. He said they're trying to be a good role model for other buildings, regarding the street-level experience, and the blending of the skyway and street-level.
(Taken from the facebook page.) They showed this image, and said that this was the less-preferred layout of the skyway. All of the orange is publicly-accessible space; the sides of the staircase will have seating and maybe tables.
Overall, I'm very pleased with the noises they made about the plans for the project. It sounds like there's a strong emphasis on making it a usable and inviting public space on the ground and skyway levels, as well as a first-class office for city employees.
The next public meeting (with exterior renderings) will be sometime in April. The ramp demolition will start in July; move-in in 2020.