Atomic Object has no dedicated, specialized project managers. We have project leads who play multiple roles of implementor, team lead, and project manager.
We discuss scale, risk, and alternatives continually throughout a project. Having a visual representation of the conversation points can be very useful.
We're at the point now where we can look at the system as a whole and start to refactor it. We can eliminate unused components and invent new ones, more tailored to our current con