Can't agree more. Privacy of a small room but having people around when you _need_ them is the best of both worlds.
And since there's no such thing as "your desk" there, you will never feel at ease. Every day might bring someone that's incredibly annoying, and collaborating with your coworkers would mean either annoying others or booking a conference room.
In the end, it's easier to collaborate with them via video from home.
I think there are advantages to having an office, but I don't think collab work places have those advantages.
The idea is to have a building/location with actual private offices after all.
Dreams? You are stuck in some weird emotional place.