Saying radio is fine is like saying maphack is fine
I see no one complaining about the maphack ability in the Partisans doctrine.
Radio is far from being a maphack as it just briefly tells you what has been built. The G43 interrogation is harder to pull off, i agree with that, but it gives you much more info. I'd be excited to see the reactions if Relic implemented radio trangulation for soviets. Another thing that was fine in vCOH.