https://www.citylab.com/transportation/2019/08/walking-in-berlin-friedrichstrasse-tauentzienstrasse/595597/
Re : Closing the Square, and two blocks off Tryon and Trade each direction.
"This summer, the German capital has announced plans to pedestrianize some vital central streets starting in October. One experiment will ban cars from the main section of Friedrichstrasse, a long, store-filled thoroughfare that, before World War II, was considered the city’s main shopping street."
IMO, it would be great to close off Tryon between Stonewall to Fifth St converting the middle two lanes to a bike & scooter thoroughfare. Restaurants could use the extra space to expand seating for outdoor dining and kiosks set up for local artists and food merchants.