There’s no question Tarkin was off. I think we can all agree to civilly disagree on matters of taste and what not if it comes down to that, and I feel like someone is entitled to think the CGI work was “good enough” for them if that’s how they really feel, but if someone actually came away from the film thinking Tarkin was spot-on, then I have to question either their sincerity or their attention to detail. They must either be the Kevin Smith type of fan, or they really don’t have the attention span for some things.
Either way, I think this whole CGI dead actors thing was in poor taste. Tarkin could have been alluded to in the dialogue, as Jabba and the Emperor were in Star Wars, without showing him on screen. The film would have benefited from concentrating the story on fewer characters, and in the case of the bad guys, Krennic’s role would have been far stronger.