I have always thought that indirect fire tends to remove positional play from the game because you will get wiped or at least loose enough squad members to be at risk of being wiped. So the game has devolved into bumrushing your opponent and trying to force a retreat.
Yeah, the incredible accuracy of indirect fire forces units to not stay in cover for more than 5 seconds. Of course you see people forming blobs to close the gap with artillery. You can't play a positional game. It wouldn't be so bad if it didn't turn engagements into just trading hitpoints like a regular RTS. It's like playing starcraft with ww2 skins. Reduce the accuracy of indirect fire and increase the scatter of all direct artillery of all armies. Even make skillful artillery like the Stuka HT not fall into completely straight lines. Give everything more scatter, less damage, and goddammit please increase the unit spacing