i am not a friend of calling for nerfs just because one unit is harder to counter than compareable others, so maybe instead of adjusting raw numbers it may could be an alternative to set the autotargeting to false or limit that into a range where other mortars are performing.anything behind that normal range could only be targeted manually. its just an idea. the unit itself wouldn't be touched and maybe the "build-and-your-active-participation-into-battlefieldtargeting-problems-are-gone" tactics are over.
just an idea
Or one mortar for close range, the other for long?
I like your idea!