Thank you all for your suggestions. If I go the "reorganize -> inline" route, I assume the instructions will not show a submodel anymore but only the addition of the individual pieces to the parent model. I had been hoping to just have one submodel that the user builds 2x.
I think I'll go the two separate submodel route, same pieces but with mirrored angles.
I think I'll go the two separate submodel route, same pieces but with mirrored angles.