For the stucco, I think you can do multiple layer of diamond mesh but it becomes harder to shape. The stucco should really be through and on top of the mesh, to make it stronger, rather than just above.
Lets try to get my idea a little better across so I made some pictures.
The first attached picture of how people always seem to apply stucco. We have the insulation, we put mesh around it, and then apply stucco.
In the second picture which I have drawn you can see this as 1.
The "problem" I have with that (not really a problem, I just think it might be possible to do it better) is that the stucco is always at the top / above of the mesh. Like with pouring concrete, we do not want the concrete above the rebar, we want the rebar to be inside the concrete. Also, we prefer that the rebar is roughly a little lower than the middle of what we are pouring but not higher than the middle (if we would pour 4 inches of concrete, I would put my rebar roughly 1 inch high so 1 inch would be below the rebar and 3 inch would be above the rebar)
Using the mesh as we do in the attached picture, we are far from accomplishing that the mesh will be somewhat close to the middle.
My thoughts are.... if we use it for concrete, and that way we make the concrete stronger, would the same not apply for stucco ?
So with the drawing I made with 2, you see how I would think to accomplish this. Option 1, we could put the mesh on like normal, than apply a second layer and we use something that will keep the second layer of mesh away from the first layer. (using wire or something.....) Option 2 would be to nut put the first layer of mesh on as tightly as the first picture is showing but much more loosely. Then apply a second layer of mesh that would fit more snug around the first layer of mesh.
Third option, not pictured but that was what I was trying to explay before, make the mesh like in the picture, apply stucco, while it is still wet you put another layer of mesh and then more stucco.
All above ways try to get mesh more "in the middle" of the stucco and not below it....
Hope it makes sense. And maybe all that extra work just does not make seance because it is not needed or can be done more easy.... just some thoughts I am playing around with. Looking forward for the PM. Will make sure you get my contact details since who knows, we might become colleagues