I love arty. It's a way of bringing teamwork in, and it can touch on how a game ends depending on who's on it and how they're using it.
I find that artillery is only unfair if A: it bombards a base or B: is hacking, and whoever hacks should be banned anyway.
Meanwhile, artillery is mean't to kill. I mean, it's job is to prevent the enemy from doing what they want. Shouldn't it continue to do so?
BTW, I also agree the god view is OP. You can easily adjust right on top of things. You already have a spotter, why do you need a second eye? Though, with minimap, it helps show if friendlies are there, preventing FF accidents.
Also, I think that if spotted targets by friendlies were marked on map, it'd also get friendlies out of the way.