I think it's really unlikely PxC will enter the Catalonian Parliament. They almost did it in 2010, when they had momentum. Now that people care more about independentism than immigration, I believe Anglada will have less votes than 2 years ago. It's been successful in some towns in Catalonia, but "Plataforma por la Libertad" will probably be a failure, as the far-right vote is still loyal to the PP, and Anglada sometimes says he's a catalonian nationalist.
So, I don't see PxC becoming a factor in national or even Catalonian politics. However, I could be wrong. Never underestimate the silliness of francoists