Another blogger with interesting comments on the A & A and its addition
Yale School of Architecture - New Wing
"In simple language I would say it looks mediocre. But in architecture we were taught not to use such simple and plain terms. So, in more elaborated architectural language I would say that it has diluted the powerful vertical and horizontal volumes and textures created by the Yale School of Architecture by adding a number of seemingly random, bitty shapes to the composition."
See complete blog below