I think reasonable parity with what you have now on AWS for visualisation. We do migration work for clients, so (in our use case at least) it'd be a useful tool for the non-technical members to be able to visualise in this way and not from some impenetrable deployment manifests. There is definitely some mileage in showing them costing breakdown too but deep down, the sheer eye-candy factor is probably more useful. Humans are generally attracted to shiny things :)

Edit: Any plans for porting this to webgl or something similar? Browser based would be optimal for us.