I wouldn’t put it beyond Gaijin to add them nerfed from what you are imagining.
Could be that you’re right and it’ll be a while but personally I think we could see them coming already. Perhaps with a Br increase. Remember Gaijin’s balance is asymmetric so if they think they could see an aircraft with 2 of those getting 1-2 kills per match then they’ll do put it on par with a Su-27SM that has 12 lesser (but still really good) missiles.
Meanwhile the 2A7s/122s are 10x better in your average ground RB game. The Abrams is just such a farmable tank.
I have 6, soon to be 7 nations at 12.0. I can turn my brain off and still manage to have 1.5-2.0 in both 2A7s.
How does anyone go negative in the 2A7/122? Do they just actively not shoot back against enemy tanks? Is there a new pacifist challenge/achievement I’m not aware of?