This is not correct, because the FCS can’t predict the future, but your eyes and your brain can. The old aiming system was basically all about using your eyes and brain and pay attention to the enemy position and movement.
Let’s think about this a bit more. A very common situation, it happens in basically every battle.
In the previous aiming system, you could just completely ignore that FCS calculation. It was obviously wrong, because the FCS included the inertia of the ship. It’s a huge mass and it takes a bit of time to steady the ship’s course. But a player with a brain knows that this guy will actually move to the left side (on the screen), so there is no sense to aim to the right side of him, like the FCS shows. You will never hit him if you follow the FCS calculation.
In such situations I could just ignore the FCS and shoot the point of the water I want my shells to lands. Which is clearly on the left side of the ship. At least for me this is intuitive and I never really had to think about this. For me it was clear that shooting at FCS calculation doesn’t make sense in this situation, because the FCS is not smart enough to predict what will happen next, it shows you this specific moment.
Basically, in the old system I had to shoot slightly to the left of the position of the enemy and then slowly move my mouse to the left side, while shooting at the enemy (because I knew he will gain more and more speed). It all made sense if you only think about this.
The problem with the new system is, that you have to not only make the same correction as before, but you also have to take additional correction for the FCS calculation error. You can’t ignore this calculation anymore, even if it doesn’t make any sense. If for example the current FCS error is 50 meters to the right, you need to move your mouse 50 meters more to the left to correct this.
I know that you want to say now you don’t see a problem with that, just make that correction. But there is a big problem with this system. Since the FCS calculation can be very misleading at the beginning and then catch up with the enemy movement, in this particular situation you have to first make a correction to the left and then… start moving your mouse to the right! Yes, to the right, because when the FCS will finally starts catching enemy movement it will correct itself quickly (the green circle will quickly move left), and to compensate for this you will have to move your mouse right. And when the FCS finally get the proper correction, you will have to move your mouse left again (because the enemy will keep gaining more and more speed).
I’m not saying that you can’t try to learn this system, but this is simply counterintuitive. Especially you don’t see the FCS calculation anymore, so you have to remember all the stupidity of this system, to make a proper correction for it.
I checked only one of my battles and the most extreme situation I found is this one:
You can clearly see with your own eyes that this destroyer is pointing left (on the screen), so you know he will move left. But the FCS still shows you to shoot at the far right side of him, which doesn’t make any sense. With this new system you have to correct this by moving your mouse very far left. Whole this green line has to be corrected by you, so in this situation you basically have to aim almost whole the screen to the left from this enemy (just to compensate for the wrong FCS calculation). But when the FCS will start catching up with the enemy, you will have to move your mouse to the right (because the FCS error will be smaller and smaller, so your correction to the FCS calculation also have to be smaller).
You basically need to learn to make correction based on the FCS calculation. It always matters what the current FCS calculation error is, because you have to correct it with every shot.
That’s why I said when I heard for the first time about this system that some players with brain will try to fight with this new system and try to predict the current FCS calculation errors and try to make corrections that include these errors. But this is more of less guessing, because you never know what the FCS currently shows. You can try to predict this of course, but in most situations it will make more sense to just aim at the enemy directly and just wait for them to steady their course. The FCS will sooner or later start to be accurate again. And if you try to overpredict it, you may end up not hitting anything at all.
So the biggest difference is that in the old system you could just ignore the FCS calculation, especially if you knew it’s not correct. In the current system you can’t ignore this FCS calculation, you always have to include all the errors of it in your correction. Or you just simply shoot all the time at the enemy ship and wait for the FCS to correct itself, which is a much simpler solution (even if you will miss some shells at the beginning, when the FCS error is huge). It usually makes more sense to do this than trying to correct the FCS calculation error, because you never know what the FCS actually shows at this specific moment and when it will become accurate (you definitely don’t want to make big corrections when it happens, and it will happen sooner or later).