Four design firms planned the perfect office and they liked a lot of glass.
Spare me. There are times when I want to hide away in my office and not in some conference room. The idea that the leader always has to be seen in order to foster a climate of openness and trust is absurd. Some of the biggest weasels I've ever known were open door/MBWA fanatics.
Plus, having a bunch of people walking by is distracting.
If you want an open office, have one. If not, have the opposite.