You can't buff USF mortar without also then buffing the other weak indirect fire like the LEiG. It is not uncommon to see an action central ISG with only a handful of kills after a thirty minute game.
In any case, the USF mortar is fine and still really annoying to play against as pack up and setup is really fast.
Ironically usf mortar ACTUALLY has anti building and soft anti coverred infantry capabilities, it's just not up to wehr mortar standards, since wehr mortar is in a faction that is team weapon reliant...and the guys that fall from their seats when they hear someone asking for 5 men grens are crying over a mortar (that is perfectly fullfilling its intended role) not being the most powerful ever.
Compared to usf mortar, isg factually fails to scare off buildings troops, as well as failing to counter anything out.
The killing radius of the usf mortar is lower than usual ? Shooting isg feels like shooting rocks.
On top of that usf has pack howie, which has the best aoe and range of all indirect fire.