Since I'm occasionally playing arta anyway, as many of us do, for various reasons, I'd like to be as tactically useful to my team while being as non-toxic as possible to the enemy team.
Some things I started doing recently is countering enemy artillery and refraining from finishing almost-dead enemies early and mid game prioritizing threat to allies over farming points. I also try to target heavy tanks that are currently lining up a shot, so that the stun prevents them from aiming and then reloading, which might be infuriating on the receiving end? I personally never had my shots consistently countered so idk. Obv. responding to ally calls and stuff like that.
What other such things can I do to be a, I guess, respectable SPG opponent? Sure, saying "go drown in the river" is funny but if you actually do it, your team will complain, lol.