> build team rooms for up to eight people instead of large floors with lots of people.
This is the right way to do open office planning. Consider Conway's Law. Teams are organized horizontally by how the system is designed by logical or physical system boundary. And you let people move from team to team to get good cross-functional ability and understanding.
Yep! Definitely why it is "up to eight people". A team may only have four people, but if a designer needs to move in from another team then there is space to allow it happen. After eight people on the team there really needs to be a decision if the tasks being handled can be split into separate teams. Such as separating a desktop and mobile client team into two teams.
This is the right way to do open office planning. Consider Conway's Law. Teams are organized horizontally by how the system is designed by logical or physical system boundary. And you let people move from team to team to get good cross-functional ability and understanding.