I'd actually be kinda miffed if they returned to DCAU continuity. Not because I think it's bad... I've enjoyed a considerable amount of DCAU myself, though mostly satellite series like Static Shock and Batman Beyond (which was known under the corny title of Batman of the Future here in Holland). But I also believe that DC has proven that their animation can exist beyond the continuity of the DCAU, even if The Batman and Batman: The Brave and the Bold were subject to some criticism.
But my greatest frustration would stem from the fact that they just pulled the plug out of a cartoon that I thought was very, very good for a while there: Young Justice. Admittedly, its second season was a mess, in terms of storyline, but it was so good on so many levels, and I was curious about seeing more of it. Warner Bros. dusting off the DCAU now seems like a regression. A path already trodden.
_________________
clarity of thought before rashness of action