Djinn, on most maps, especially the huge ones there is indeed a spotter to take out. You have really nice spots to hide in craters and constantly perform your spotting. This has something to do with a special mission for the spotter and for the defenders to take him out.
On my favourite example, Brest, it has nothing to do with spotting skills. Just peek out of cover and spot the wall of the building down the street. Everyone can do that, anytime. Has absolutely nothing to do with spotting and killing the spotter. If the enemy team wants to spot, it can, anytime.
The mortar only gets extremly annoying and undodgable on this map in a few situations:
When Germans only hold Boulangerie, Ruins and Harbour. US Mortar just has to shoot between boulangerie and ruins for kills, because Germans have no choice. Either the take a way around there and defend for a few seconds against infantry until the mortar kills you, or stay in base and forfeit.
And exactly at this point it has absolutely nothing to do with being noobish or lacking skill. You have to prevent the infantry to proceed and at the same time you will die to the mortar to do so. If you not do so, enjoy your flags being taken in a minute. On Brest, you just lack those flanking routes to dodge the mortar and ambush the enemy. Of course you can set up your position more defensively. But just because you do not die to mortar Djinn, please don't think you are better than the rest. If everyone would hide way out of mortar range on this map you loose boulangerie flag and then ruins shortly after, for sure.
The other situation is when the US team does not manage to get HQ and plaza early and nearly loose fountain. Happens not too often, but sometimes. Same thing, face the enemy, try to break through. And yea maybe die to mortar or the enemy, but you are not nooby because you try to break through between the explosions and die.
If you want to fight properly and defend or attack you just have to risk fighting under mortar fire. But stop talking crap about skill and noobs dying to the mortar, on Brest it has relatively less to do with that in some special situations of the game.
The mortar is definately necessary, but please stop insulting people for dying to it, while they just do their job and try to change the way the game is going.
Furthermore, I have more a problem with the map of Brest. I don't dislike the mortar because of the effictiveness in general, I dislike it based on the poor map layout of Brest, which is just does not fit mortar-gameplay like that.
I also want to agree on exposing mortar positions. Kinda sad that artillery often stays untouchable for everyone in main base.