What's wrong with arty?

Draschel:  But TD frequently get spotted/shot in return for doing that.But TD need the position to do that, arty just lobs from afarBut TD can't shoot over obstacles, mountain ranges.But TD need to aim their shots arty just wants to hit.But TD really have to be paying attention to map circlesBut TD can go alongside pushes, sharing HP/Focus fire  it is a lucky arty hit, like 1 in 15. But the problem, these hits are free, without effort or real threat in return.