Jared Leto put a lot of work into his Suicide Squad character (if you somehow forgot, he embodied full Joker grossness when he sent condoms and anal beads to his coworkers), and it seems like he's a tad miffed that the Joker doesn't appear frequently in the movie.
Earlier this month, Leto started a BBC Radio 5 interview off by admitting that he hasn't seen the final cut of the movie, which reportedly ditched a lot of the scenes he shot. “Were there any that didn’t get cut?” Leto had said in an IGN interview. "If I did anytime soon, it'll probably surface somewhere."