*And it's weird, this was obviously following on the Origins comic. But Marvel later made Dog his own character. When he showed up in Aaron's Wolverine and the X-men, a friend asked me who Dog was. I responded: "I have no idea, cause Origins pretty obviously implied he was Sabertooth."
Granted, while Icon needs a bit more work than the others due to him taking up so much of the same tropes as Superman, I feel that Static and Hardware can pretty easily just exist and show up in places without any real work. They just need people willing to write them into books. There is no good reason Static has not been a mainstay of the Teen Titans for the last seven years.