Calliope just needs its HP dropped hard to 160 like literally every other rocket arty outside of the LM, price adjusted, then buffed accordingly. It's too hard to justify having a mediocre rocket arty with 400 HP in both stat regards.
As far as those specific riflemen stat adjustments, no sir. As distro said, riflemen not being used because callins are stronger, and then buffing riflemen is the bad way to do things. Specifically from your stats, that would make riflemen too good too early similar to volks, except better because they have the better lategame stat power as well.
I'm all for getting rid of the callin crap that shapes literally every single meta, but not with buffs to overtake the callins.
I respect your opinion. But my opinion is different. I think the intention of putting a calliope in this patch is not wrong for something you definitely wanted to use.
Instead, I think that the price is higher than other rocket arty, and even better for them, the higher the cp requirement, the better the performance.
In addition, I do not think it's a game for a rocket car, but rather a xylophone rocket.
I also think that the avoidance figure of the rifle is a bonus when it is lower than usual. And I agree with the opposition to the increase in damage, but I think it is not bad if you think about the cover damage because the normal engagements fight over the cover.