Good points all! Thanks! The 'rules' for the sci part of sci-fi are that whatever you're creating has to have plausible connection. Avatar, with its floating islands that have water - falls, breaks that rule so its not sci-fi so much as fantasy. And fantasy is fine, cool even but IF we're mired in weapons stats there should be some cohesion, some common 'science', n'est pas? Destiny is fantasy, not science fiction.