Or maybe, for now the Death Star prototype could just be implemented instead of the actual Death Star or Death Star II. I remember reading in the novels that the prototype was just the skeletal frame of the station with the proto-superlaser. And the proto-superlaser was not made as powerful as it's successor so it could only make the planet uninhabitable, not completely destroyed. So maybe the Novalith Canon can be replaced by the Death Star Protoype. PS: About the coding issue for implementing the actual Death Stars, couldn't you just have the destroyed planets changed to asteroid fields when they are destroyed?