One of the most important lessons i extracted from composing music through many trials and errors was learning the importance of silence in critical parts of a composition. art is not a cake where you can add more and more icing assuming that it will get better and better.
This is especially relevant to architecture and urban design. There is a tipping point where the composition simply cannot take anymore good ideas. The best is to have just 1 main big idea that is strong, and then detail it well, without over detailing and anticipating the instances that needs to be left blank. The presence of absence is important in parts of a composition and it is a sign of mastery if used at the right place and at the right time.