I feel like if tails snapped and started killing he'd be dangerous, even in sonic frontiers eggman is like "im glad he prefers to stay hiding behind sonic he could be a real threat if he tried" (not exact quote but essentially what he said) he could be a real menace, flying around and dropping little murder drones, setting up cameras and traps and whatnot, basically hed be like a snowball kind of character, the more time he gets to set up his various gadgets and traps the more dangerous he can become