Forget carpet, colors and textures. The functional aspects of a new building are critical and guaranteed to heavily affect everybody, so you cannot think enough

Forget carpet, colors and textures. The functional aspects of a new building are critical and guaranteed to heavily affect everybody, so you cannot think enough about them and always get tons of input. Otherwise, you end up with nice bathrooms but outside secure areas that eat minutes from everyone's daily routine, burning sun instead of natural light, not enough conference rooms causing excessive environmental noise, too many cubes next to HR but not enough for the development team, teams who are split across floors because you planned the space poorly, unused kitchens because they are simply in the wrong place, a lobby with standing room only, having to escort visitors inside secure areas to use the bathroom because you forgot one outside, only one AV-capable conference room but half of all meetings require a projector, and a late realization that the receptionist desk should've been at the bottom of the stairs to greet lost visitors and the fedex guy instead of running up and down stairs all day to answer a call box, etc.