I thought the Talia reveal was really poorly done.
Not only did it detract from Bane's character development, but her brief time as the "big bad" was a complete joke. She pressed the detonator and it failed to work, then she drove down the street and got killed in the span of like two minutes.
She was a horrible, horrible character. I mean, wtf. The "twist" was kind of cool, but it didn't go anywhere, and the motivations didn't make any sense.
Like ok, she escaped the prison at the age of 7 because apparently she's Super Mario, and somehow found her father who she's never met because he left before she was born so she literally has no connection with him. And then Bane was excommunicated for loving her, or something?
It was like a twist for the sake of being a twist.