Yes the big tentpole movie is definitely Supergirl, fresh off her big success in The Flash /s. Get a grip dude, the tentpole is this movie because if it flops, the DCU is toast. And if this movie was supposed to be a showcase, it would have the real League with Batman in it. No one is buying WBD because of the secret financial power of Guy Gardner and Hawkgirl. The JLI is in this because Gunn loves that team.