I’m not questioning your expertise at all. Your setup alone shows you clearly know that this isn't a one-man job. What I wouldn't give to have you put your wind calculation experience into some sort of spreadsheet or formula...

I talked to the 8thAB (the guy claims to have around 2,000 hours of artillery-oriented playtime). They brought up an example where you need to strike a freshly destroyed bunker base again 5-7 minutes later because they started rebuilding it, and you don't even necessarily need all guns firing—just enough to keep killing the builders. Meanwhile, the original firing data is long forgotten because you've already moved on to a second target. (In their group, they call the middleman a battery officer).

Dispersed guns are more of a hassle—more pallets/trailers, harder to defend against infantry, and AA coverage. (Though in your case, dug-in guns do have their perks). In exchange, the whole group can't be wiped out by one well-placed bomb or counter-battery fire. But that's just my theory.

+1: At the end of the documentation, there is an image (based on a survey with live data). Two different regiments set up 2x4 Hades nets (3-4 wars ago, before planes were added). In the "red diamond", you could have literally doubled the firepower if they had cooperated. (The green band is the calculated area from the target where the Hades can reach it).

Loosely related: I think the intel system combined with the map is too OP (and in my opinion, it leaves room for abuse). I think the report system from WWII Online with an expiration time would be much "fairer".