I have less of a problem with the CGI than I do with some truly awful characterisation for Leia. Throughout the original trilogy (and TFA) we're shown Leia as someone how genuinely CARES about people. So it completely goes against character that, when given the plans for the Death Star that were literally taken from the hand of someone being slaughtered by Vader, she turns to the camera and, whilst saying her line about hope, she SMILES! WTF?! That was just ridiculous writing. She should have looked stoic, determined, slightly saddened, anything but happy. Although it was over-acted, think about Mon Mothma's face when she delivers her line about Bothans and plans for the DS2. That was more appropriate to both characters. Leia's smile is such a stupid mistake for the film-makers to include.