Nice pictures!
Two of the things that I do not like about Toronto's suburbs are on display here.
First, I do not like that the houses are so tightly packed in. The houses are so close together that there is no room for yards, including trees and gardens. I think a little more space between hoses would allow for some much-needed greenery to grow and make the neighborhoods more pleasant in the coming decades. This is not a knock on suburbs, per se: I also don't like the look of
block after block after block of rowhouses with no tree in sight.
While I like that Mississauga is trying to be a "real city", I don't like how everything has been built in the last 25 years. There is no "organicness". Sometimes the nicest neighborhoods have a mix of architectural styles, or have different things built from different decades. You can feel the evolution of the neighborhood. When everything is from the same time period, there is a sense of manufacturedness.