i don't know why you want to break the balance just for that.
Why would the calliope break balance? It's already in a great doctrine and used frequently in teamgames. If there's a different solution to the raketen blobs without making them worse in as single AT guns, i'm all ears.
And why would USF get such a nuclear megabuff?
I'd rather nerf the calliope to closer to pwerfer levels and then swap them then continuously bring up how the scott is too durable patch after patch and it getting ignored. That and USF and UKF can still not deal with rak blobs because of the lack of burst.