My problem with the CGI characters is not that there are there, but that they are given screen time when they are not needed. It is like they were really proud of fake Leia and fake Tarkin that they put them in close ups and give them lines that were not needed. It was like someone wanted to show off.
Leia could have been on her back, like she was during most of her scene, instead they panned out around her and closed up right in her CGI face to give the final line in the entire movie, like they expected the reveal of a fake Leia would make the audience gasp (nevermind that their presence there makes little to no sense, and they even contradict it during the movie).
There were ways to make Tarkin present without the weird way it was presented; they even admit to some of them: make up, being in the shadows or only showing his back, a hologram, even using a body double like in the last couple Terminator movies... but again, they wanted to show off... give him lines, making closeups (as a way to mirror Leia's appearance, his last closeup is the end of one of the "dramatic scenes"), and using him like another actor in the movie.
Leia could have been on her back, like she was during most of her scene, instead they panned out around her and closed up right in her CGI face to give the final line in the entire movie, like they expected the reveal of a fake Leia would make the audience gasp (nevermind that their presence there makes little to no sense, and they even contradict it during the movie).
There were ways to make Tarkin present without the weird way it was presented; they even admit to some of them: make up, being in the shadows or only showing his back, a hologram, even using a body double like in the last couple Terminator movies... but again, they wanted to show off... give him lines, making closeups (as a way to mirror Leia's appearance, his last closeup is the end of one of the "dramatic scenes"), and using him like another actor in the movie.