[creativenolo]

This. Your process also highlights that developers and designers working together is a process that is interlinked and takes time.

Another comment highlights that designers work often without the full picture. I'd add to this they are responsible for bringing solutions to the table as the catalyst to collaboration, exploring compromise and iteration. The best engineers bring solutions to the table too. The worst is when the developers and the designer are bullshitting each other on why things aren't possible with reason from their own domain that the others don't understand or can't reason about.