I’m not saying this is impossible as I have done something similar to use a linked file (generated from RAM Structural) to change all of the framing meta-data in my model. But I do think that the way Arch/Struct look at walls and how we define openings will cause some difficulty. Couple of things you will need to be on the lookout for and issues you will likely need to address.
First - the Structural wall and the Architectural wall likely have different positions (this may not matter given that you are dumping to Dynamo geometry first and not tracking element ID’s form the arch wall to the structural wall). Somehow - Copy/Monitor still works based on wall centerlines and not on core faces or core centerlines. Architects have finishes on their walls and structural engineers don’t, so the wall centerlines are never going to line up. Same goes for bounding box - the arch wall will have a larger bounding box than the structural wall… unless of course the arch wall changes every few feet because of different finishes while the structural wall (the core) is constant for the full length of wall.
Second- don’t assume that the opening the architect uses is correct. Structural wall openings are often larger than the openings that the arch family uses. Want the slab on grade to continue through the door opening? If so, the door opening then needs to be taller than the arch door opening and dropped down below the slab a few inches. Also the architect might not account for the correct “rough opening” in their families. So you may need to modify the opening curves after you’ve read them into Dynamo.
Third - all elements in the linked models will pull their dimensions relative to the Project Base Point of the linked Model, not the host Model. So if somehow your model and the linked model have different Base Points and you’ve manually aligned or done a Center to Center alignment…you may be dealing with vastly different coordinate systems. A transform Matrix can fix all of that, but it’s just another bump in the road to deal with.
That said - I really think we need (in Revit) a better way to Copy/Monitor openings wherein we can map an architectural door family to a structural “door opening” family instead of just having the CM automatically “read” the opening from the arch model, and I think whatever solution you come up with will be a step in that direction.
(Edit- Looks like Konrad beat me to the punch on the coordinates issue)