The crosshair we've got now needs some extra work to function well.
First of I'd like to say that It's half broken.
You can't rely on the crosshair if you're in a tree, the crosshair will be placed on the middle of the weapon even if you're in a ready stance. Once you leave the tree the crosshair will be placed in it's correct position.
If you're leaning at a wall and trying to shot someone, the crosshair will most of the times -sit- at the wall and not where you're actually aiming, making it hard to know what you're aiming at and you're forced to look through the scope/iron sight to compensate for it.