DISCLAIMER: The legality of the mod is still unknown (considering it’s WG, we will have to wait for a year or two).
A new mod has arrived a few days ago. Basically it made a sandbox feature available on the current patch. The mod will display the exact location where allied arty is aiming, which is quite useful. Ths might be a cheat, and I posted it here in the hope that WG gets aware of it or that they would include it in the game, hopefully.
Get it here: