Aiming in War Thunder is terrible because it was designed for small boats with ranges of 3-5 km. The current arcade mode, while not perfect, actually addresses and mitigates some of these issues — such as constant target visibility on fast speeds and distances, dependence on weapons for some ships aka useless main guns, simultaneous aiming of secondary and main guns considering their ballistics, close-range aiming, parallax bugs when closing in, and other quirks. It also makes many underperforming ships (like those without rangefinders but with large guns) playable, which were previously hardly used or only played with AA guns ignoring the main caliber. Yes, the developers could have done this more elegantly; they could have implemented a dependency in accuracy for aiming and repositioning the guns with different delays as modern vs old ships difference, kept the information about barrel directions intact, and not broken everything with shooting through obstacles for a week. But unfortunately, we have what we have.
Full return to old aiming will bring all its problems back.
At least camera shaking bug being accepted.