A few friends and I discussed this on a trip to Toronto. Like Dundas square, the newer buildings around it are unremarkable in architecture....like some of the newer buildings in River North.
We finally decided that the post office in RN should be demolished and replaced with a large plaza. All the parking podiums around it would be clad with screens. I don't know if there's a way you can design the LED sockets with some sort of hood so that the lights don't shine up into residences, but maybe.....
Maybe I'm just used to all the light. It's bright as daylight over here on Oak and Rush and I have one easy solution...close the blinds at night. When you close the blinds it makes your place dark. Besides...when you look outside and see all the lights it's characteristic of the city.