is there any way of affecting URN at the component-resource level? i.e. run the same component resource twice but in such a way that it's referenced separately in the stack?

Yes. Pass in a different name parameter to

super()

.

Seems a bit strange to pass a variable into a super() - which is what I would need to do. I think what I really need is some basic validation of my approach. I'll see if I can't make some simple version of my code to see if it makes sense to you all and request a cursory look to see if I'm making any fundamentally incorrect assumptions.