I have little to no hope for the DCMU. Not because I hate DC mind you but because the Architecture is crude at best and so far the trailers for JLA look exactly like the thing I feared...I have no doubt that they will do a halfway decent job on some of it...But overall its the rushed execution of a flawed design. I come back to this but its true...Say about Marvel whatever you want..but there initial structure and approach were just better. And that helps them in the long run.
And apparently, there is a rumor going around that the people in power at Warner Brothers see this the same way and want to go away from a shared universe again.