Rogue's Gallery To Fill Affleck's "batman"?

Turns out Ben Affleck's upcoming solo "Batman" film may not have just one or two villains - in fact it may have a whole bunch more than that. Affleck stars, directs and is co-writing the film with DC's Geoff Johns which will form part of the DC Extended Universe that began with Zack Snyder's "Man of Steel" and continued with this year's "Batman v Superman: Dawn of Justice" which introduced Affleck's older take on Bruce Wayne. Rumors so far have suggested the film will follow the "Under the Red Hood" story in which the seemingly dead Robin returns from the grave, something hinted at in 'Dawn' as well.