I gotta say , i've yet to read an arguement or see an arguement that convinces me this is a good idea . Nolan's series and characters should be limited to his saga imo. Any cheap and lazy attempt to hold on to the Nolanverse or his characters only shows to me the lack of imagination that WB towards JLA project in general.
But , I guess its hard for WB to let go and try something new or try another director or actors take on Batman. Ultimately though, they're gonna have to do it sooner or later.
I hope they do the bold thing and not try to build another Batman francise on Nolan's foundation. Imo, using JGL as Batman isnt bold, its lazy , and it demonstrates the studio's fear of truely taking a chance with a new Batman and a new universe.
Nolan has shown them that the right filmmaker can come up with their own creative spin on the Batman character if you give them a chance and that you don't need to rely on previous francises to tell a new story. If this idea is truely floating around WB , I hope they take a step back and really consider what it would mean to continue to make this move .