Ghosth,
I disagree on the second TG issue. I can see only the disadvantage of not having another front open which can distract defense. But, I think this is not true, either. With 2 CV's you have exactly the same thing, since it is not easy to assess exactly which one needs more the hitting

, thus is like having a second front. And you double the firepower and ack strenght over a certain area.
Cheers,
Pepe