There are 2 mods out there that help immensely. One is the auto alt mod so that you get range/time information always available. The other is the lead indicator.
In combination, they are amazing. Before, all I had was how long it took my shells to get to a target (and I had to hold down ALT to get that info). I had to guess where that target would be in that span. I had to guess at a heading. And I had to fire (most likely a spread shot so SOMETHING would hit).
Now, I have the exact spot the enemy will be in the time my shell will take to get there. I can then fire all shots there if I think he is not maneuvering. I can fire around there if I think he is going to move a bit. That is HUGE. I no longer have the second guess to think about (leading). All I have to do is shoot around the spot and if I am shooting at a BB, I will hit (unless RNG).
If you don't think that removing half the guesswork is not a huge advantage, I don't know what to tell you. 2 shots of guessing is 30+ seconds of waiting for splashes, 30+ seconds of not firing a full salvo, 30+ seconds of not reloading a full salvo. In the same time of you ranging in, I have fired two broadsides on target.
The other problem with 'banning it' is... how do they ban it? If Wargaming does not stop the mod process altogether, it is an on your honor thing. Good luck with that.