Why it won’t work:
No Christian Bale
While Bale’s portrayal of Batman/Bruce Wayne wasn’t flawless (that voice could be jarring at times), he is the definitive Caped Crusader for a generation. Would the public be so receptive to a new face under that famous cowl?
No Christopher Nolan
The director who made Batman credible again won’t play a role in this film at all and his film’s continuity will be ignored. Is that the right move when considering how beloved the Dark Knight trilogy continues to be amongst fans?
The tacky recent history of “vs.” films
Alien vs. Predator, Freddy vs. Jason — many of the super high-profile fantasy team-ups that paired successful franchises have been embarrassingly bad and cheesy. This could be a huge mistake. Especially with Superman suddenly fashionable again.