And here’s the reason why I recently made the entire Batman Family as presented in season four of Batman: The Animated Series. After making my brother-in-law a couple of framed cut-outs (Spider-Man and World’s Finest), my boy wanted one of his own. He also wanted his own DCAU-style Batman. Two birds. One frame.
As for the multiple signals; yes, that may not be canon, but you can imagine how it went over with five year old. (Like a Bat plane. Soaring high above Gotham City).