The Joker won't be in 2016's Batman v Superman: Dawn of Justice, but the fact that the movie is inspired by Frank Miller's The Dark Knight Returns will more than likely greatly influence how the villain looks in Suicide Squad later that same year. Miller ditched the lanky frame of past Jokers and gave him a more muscular and bulky physique, something which resulted in him somewhat being more of an imposing and physical threat to Batman. He also gave The Joker a slightly effeminate appearance (it was revealed that his red lips were the result of lipstick). Without meaning to typecast him, Jared Leto obviously nailed that type of character by playing a transgendered individual in Dallas Buyers Club, so even bringing just a fraction of that to The Joker here could lead to something very unique and special. Plus, a stronger Joker is ultimately a much scarier one in many ways too.