[Imp]

I agree with you pre bombardement should still be there & that it tends to target victory hexes to much which is why I suggested only reserve some units.
What I am trying to do is stop it using units that have little ammo for that purpose (CM Rockets) & reserve them for when it at least has suspected targets.

On CB its not dead straight forward as experience seems to play a big part. If you play mainly campaigns (so experince increases) or as NATO side exp 80 vs pact exp 70 you will get more CB fire missions as a general rule I feel.
That said perhaps the AI reserving more for CB is a good idea keeping best experience longest ranged tube for that at times if it doesnt already is a good idea.
I just started playiing the AI again 4 games in & in one it used MLRS for CB, ouch it was a fair way into the battle before I would let what was left of my arty do more than 2 firemissions in a row after that.
Off topic dang those current timeframe USMC helos armed with APKWS are seriously nasty bits of work they can take out a mech company all on there lonesome.