Counter barrage from the ostheer mortar already has extra range..
If you need to decrew support weapons I think the mortars already have enough range, and if it doesn't meet your need I suggest you get yourself some rocket artillery.
Also, the USF indirect fire is already really strong with the Pack howi and the Scott in their stock loadout.
I get it, if having problem to deal with packhowis / ISGs just build a rocket artillery..
I better not see people crying about OP packhowits here in the future.