2. It Could Show The Whole Rogues Gallery
Arguably one of the greatest things about Batman is his rogues gallery. In the Batman films we have seen some of Batma'ís greatest adversaries, but only 2 or 3 at a time. Some of the greatest Batman stories involve multiple villains such as The Long Halloween, Arkham Asylum: A Serious House on Serious Earth and Batman: Hush. There are also a number of significant villains that we are yet to see in a film such as Black Mask, Clayface, Harley Quinn, Hugo Strange, Hush, Killer Croc and Red Hood. In a Batman TV show, we could see these villains, and also how different combinations of these villains relate to each other.