Hey Fury that is a tough problem. I wonder if it makes sense to also ask in the community of practice thread?
The reason I suggest that is by taking people off of teams and just sending them for short times I have seen challenges in building domain knowledge as well as strong working relationships across roles/teams. Community of practice may be something to think about. But in reality I think this is a whole other problem all together which you aptly call organisational architecture. Haven’t seen too much on here in that space!