One of the latest batch of rumors out concerning the JLA movie is that Christopher Nolan is "in talks" to be a sort of godfather over not only JLA but other DC hero franchises as well. Also rumors that Bale may return for either a JLA movie or a Batman/Superman movie, and that Zack Snyder may be involved in some way as well. Sounds like WB is waiting to see how Man of Steel does before moving forward with anything.
Not sure what to make of this news. It is just silly how difficult it is for Warners to get the whole DCU going. They are so afraid to be "copying" Marvel that they just don't know how to go about it it seems. Hopefully they'll get some things together soon. As for Nolan/Bale, I'm not sure what to think of it. Nolan is a brilliant film maker, and I loved his Batman trilogy, but at the same time I don't know if JLA needs to be gritty/grounded/whatever you want to call it to live in that same world. He'd likely be producing at most, so that doesn't necessarily mean they would go that direction....but I think JLA should be similar in tone to Avengers, less gritty, more fun. Also like Bale as Bruce/Batman, but would be a little surprised if he'd return. It would be nice to build the universe that way though as well.
My one thing with Batman that I keep coming back to is that if they are going to reboot things, or even just restart again after JLA...I wouldn't mind seeing a Batman world where some of the maybe goofier concepts could be included too. I may be in the minority, but I'd like to see Robin appear, as well as Batgirl, etc. Not the Batman Forever or Batman and Robin versions of course, but done well. I think Robin in particular gets a bit of a bad rap any more as everyone thinks of the character (whatever version) as the pixie boots/bare legs and goofy Burt Ward style. In the comics, he's not that way anymore and hasn't been portrayed that way for awhile. Dick Grayson is one of my favorite characters, so I'd of course like to see him included the most, but even versions like Tim Drake (or even Damian Wayne) would be cool as well. I always say it, but I think Batman: TAS strikes the perfect tone for the whole Bat family, as well as some of the goofier villains like Mr. Freeze and Clayface, and I'd like to see some of that tone carried over to the big screen now that we've gotten the super serious/gritty Batman trilogy we've wanted as well.