I have worked on the project of many squares in my carreer. During the development of the project you'll never know 100% what is going to suit perfectly the users of that space and what is going to fail. Example: I really wish I could know which one of the 20 benches I put in that square is really being used by people and which one not. Once I find out that the one on the upper right corner has only been used times in one year I could remove it. It would be a never ending process. Fascinating.