Personally, it wasn`t the real live actors which made me prefer WC over X-wing & TIE-Fighter and the likes. it was the story. take WC1 and WC2, they didn`t have real actors, heck, they didn`t even use animation in the cutscenes, and still, it made you connect to the story.
You don`t have to use live actors, you just have to have a good story that people can identify with.