In Combiner Wars, everybody was a Combiner. In Titans Return, everybody was a Headmaster. What if everybody was a Double Spy like Punch/Counterpunch? One alternate mode with two robot modes — one Autobot, one Decepticon. Rubsigns would reveal whether each figure was an Autobot disguised as a Decepticon or a Decepticon disguised as an Autobot. They’d all be available in both flavors, so you wouldn’t truly know who you got until you opened the package and revealed their shield.