Originally Posted by MrsKent26
Yes it is. Teasing the justice league makes people think about the JL and furthers the idea that JL is the grand prize while everything else is a stepping stone at best.
This is why I think one of the titles that should be considered is Justice League: The Worlds Finest, or The Worlds Finest: Superman & Batman. Adding JL to the title would add extra buzz to the film and raise movie audience curiosity even more since the film is a JL origin film basically anyhow.