Thanks for an actual response and not a stupid meme post.
I think you could apply this logic to any faction with non-doc artillery though. Panthers with stukas/panzerwerfers, t34s with katyushas, etc. I don't see how giving the US an expensive non-doc artillery unit makes them OP.
If the calliope is what makes this not possible, what about replacing the Scott with another unit (maybe the 105mm sherman) and making it a CP call in?
I think the main issue would be the Jackson zoning out the Panther and the Calliope could actually destroy both stuka and panzerwerfer in a lucky barrage due to area and volume of rockets. It would require a lot of rebalancing.
I have been playing a lot of soviets lately and the t3476 is straight trash, that is not going to stop a tank kiting the Katy. The stock mines, conscript snare, penal at satchel are what would make people think twice.
I would like the 105 to be stock, the Vet1 ability would allow for more consistent bunker busting compared to the Scott.