While yes non team players on the design side or dev side can be an issue, just as much it could be project / product managers. I think the key to a well oiled

While yes non team players on the design side or dev side can be an issue, just as much it could be project / product managers. I think the key to a well oiled machine is good direction from product, getting everyone bought in on the vision / roadmap (or at least understanding the priorities). From there working on the Information Architecture (I call it data design). Having the data design clearly defined alleviates many issues. It shows that there is clear definition and both sides can start working on their parts even though the final design blocks the final UI.