The light and frothy heist caper has been a staple of cinema for decades, and the premise is so malleable that there are any number of spins that can be put on the standard setup. All you need is an ensemble cast seeking a big score, and you're free to do whatever you want with the rest of the story....
Basically every Batman movie has seen the Dark Knight don a new version of the Batsuit. After all, it works both in and out of the universe. On the one hand, it makes sense that Bruce Wayne would keep upgrading his crime-fighting gear, while on the other, Warner Bros. have to sell some new toys. And sure enough, for Justice League, the second proper appearance of Ben Affleck's Caped Crusader, he wore a completely new costume....